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Search results for problems posted by Bractals :
Difficulty: 3 of 5Tan2Mid (in Geometry)
Posted on 2020-03-11 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Where's the Center (in Geometry)
Posted on 2018-05-20 by Bractals (Solution Posted, 2 Comments)
Difficulty: 4 of 5Equally Spaced (in Geometry)
Posted on 2018-05-13 by Bractals (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Perpendicular Incenters (in Geometry)
Posted on 2018-05-06 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Chord-Product (in Geometry)
Posted on 2018-01-27 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Intersection of Perps (in Geometry)
Posted on 2018-01-14 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Circumcenters and Vectors (in Geometry)
Posted on 2017-12-31 by Bractals (No Solution Yet, 2 Comments)
Difficulty: 4 of 5LOP (in Geometry)
Posted on 2017-12-13 by Bractals (No Solution Yet, 7 Comments)
Difficulty: 3 of 5T-N-T (in Geometry)
Posted on 2017-11-25 by Bractals (Solution Posted, 2 Comments)
Difficulty: 4 of 5Parallelograms (in Geometry)
Posted on 2017-09-09 by Bractals (Solution Posted, 5 Comments)
Difficulty: 4 of 5Sixty is Special (in Geometry)
Posted on 2017-08-18 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Sequence of Sets (in Sequences)
Posted on 2017-07-30 by Bractals (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Pruned Triangle (in Geometry)
Posted on 2017-07-28 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Regular N-gon (in Geometry) Rating: 4.00
Posted on 2017-07-09 by Bractals (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Polygon Overlap (in Geometry)
Posted on 2017-04-17 by Bractals (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Rectangle Point (in Geometry)
Posted on 2017-02-28 by Bractals (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Circumcenters and Incenters (in Geometry) Rating: 5.00
Posted on 2017-02-19 by Bractals (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Sphere-Cone (in Calculus) Rating: 3.00
Posted on 2016-12-25 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Rectangle-Diagonal (in Geometry)
Posted on 2016-11-02 by Bractals (Solution Posted, 1 Comments)
Difficulty: 5 of 5Sum to Cevian (in Geometry) Rating: 5.00
Posted on 2016-09-03 by Bractals (No Solution Yet, 0 Comments)
Difficulty: 4 of 5Concurrent Rays (in Geometry) Rating: 5.00
Posted on 2016-08-20 by Bractals (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Collinear Points (in Geometry) Rating: 4.00
Posted on 2016-08-19 by Bractals (No Solution Yet, 0 Comments)
Difficulty: 4 of 5Parallel Midpoints (in Geometry)
Posted on 2016-07-30 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Insert Zero (in Numbers)
Posted on 2016-03-21 by Bractals (Solution Posted, 5 Comments)
Difficulty: 2 of 5Find number and base (in Numbers) Rating: 5.00
Posted on 2016-03-17 by Bractals (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Tangents (in Geometry)
Posted on 2016-01-31 by Bractals (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Sphere Intersections (in Geometry)
Posted on 2015-11-11 by Bractals (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Bisector of Foci Angle (in Geometry)
Posted on 2015-08-05 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Concurrent Secants (in Geometry) Rating: 4.00
Posted on 2015-08-02 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Red, White, and Blue (in Logic) Rating: 4.00
Posted on 2015-07-29 by Bractals (Solution Posted, 4 Comments)
Difficulty: 2 of 5xyz inequality (in Just Math)
Posted on 2015-07-24 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Four Distinct Points (in Geometry)
Posted on 2015-06-25 by Bractals (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Three Centroids (in Geometry)
Posted on 2015-05-28 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5A Midpoint Construction (in Geometry) Rating: 4.00
Posted on 2015-05-15 by Bractals (Solution Posted, 3 Comments)
Difficulty: 4 of 5Chord Triangle Constant (in Geometry)
Posted on 2015-03-21 by Bractals (Solution Posted, 4 Comments)
Difficulty: 4 of 5Spacy Colors Lemma (in Just Math)
Posted on 2014-12-06 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5M-D Sequences (in Just Math)
Posted on 2014-11-09 by Bractals (No Solution Yet, 3 Comments)
Difficulty: 5 of 5Spacy Colors II (in General)
Posted on 2014-10-26 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Conic Triangle (in Geometry)
Posted on 2014-10-17 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5n-dimensional spheres (in Just Math)
Posted on 2014-09-15 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Convex Hull (in Geometry)
Posted on 2014-09-10 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Sequence of subsets (in Just Math)
Posted on 2014-09-06 by Bractals (No Solution Yet, 0 Comments)
Difficulty: 2 of 5Decimal Digits (in General)
Posted on 2014-09-02 by Bractals (Solution Posted, 5 Comments)
Difficulty: 4 of 5Three Line Segment Sum (in Geometry) Rating: 4.00
Posted on 2014-05-31 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Concurrent Lines (in Geometry) Rating: 4.00
Posted on 2014-05-30 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Triangles, Incircles, and an Excircle (in Geometry)
Posted on 2014-05-24 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Set Theory (in General)
Posted on 2014-04-19 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 52 to 1 Bisector (in Geometry) Rating: 4.00
Posted on 2014-03-30 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Inradii Ratio (in Geometry)
Posted on 2014-03-08 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Divide in Half (in Geometry) Rating: 5.00
Posted on 2014-03-07 by Bractals (Solution Posted, 6 Comments)
Difficulty: 3 of 5Heptatriangle (in Geometry)
Posted on 2014-03-01 by Bractals (Solution Posted, 0 Comments)
Difficulty: 4 of 5More Concyclic Points (in Geometry) Rating: 5.00
Posted on 2014-01-26 by Bractals (Solution Posted, 0 Comments)
Difficulty: 2 of 5Constant Ratio (in Just Math) Rating: 4.00
Posted on 2013-12-17 by Bractals (Solution Posted, 2 Comments)
Difficulty: 4 of 5Amazing (in Geometry) Rating: 3.00
Posted on 2013-12-07 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Minimize Angle (in Calculus)
Posted on 2013-11-30 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Similar Triangles (in Geometry) Rating: 4.00
Posted on 2013-11-15 by Bractals (Solution Posted, 10 Comments)
Difficulty: 5 of 5Collinear and Equal Angles (in Geometry) Rating: 4.00
Posted on 2013-11-09 by Bractals (Solution Posted, 5 Comments)
Difficulty: 4 of 5Equal Bisectors (in Geometry)
Posted on 2013-11-03 by Bractals (Solution Posted, 0 Comments)
Difficulty: 2 of 5In and Out (in Geometry)
Posted on 2013-10-24 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Many Cyclic Quads (in Geometry)
Posted on 2013-10-19 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Circumcenter on Ray (in Geometry) Rating: 4.00
Posted on 2013-10-12 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Angle Bisector (in Geometry)
Posted on 2013-10-06 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5SSS, SAS, ASA, and ... (in Geometry) Rating: 5.00
Posted on 2013-10-02 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Shared Vertex (in Geometry)
Posted on 2013-09-25 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Midpoint of Two Chords (in Geometry) Rating: 4.00
Posted on 2013-09-15 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Sum of Chords (in Geometry)
Posted on 2013-09-07 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Ring of Circles (in Just Math) Rating: 4.00
Posted on 2013-08-17 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Rectangle to Square (in Geometry)
Posted on 2013-08-13 by Bractals (Solution Posted, 9 Comments)
Difficulty: 2 of 5Circles Around a Circle (in Just Math)
Posted on 2013-08-07 by Bractals (Solution Posted, 2 Comments)
Difficulty: 4 of 5Circles & Parabola (in Calculus)
Posted on 2013-07-13 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Parallelogram Requirement (in Geometry) Rating: 3.00
Posted on 2013-07-07 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Concyclic Points of Tangency (in Geometry)
Posted on 2013-07-02 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Four Equal Triangles (in Geometry) Rating: 5.00
Posted on 2013-06-16 by Bractals (Solution Posted, 3 Comments)
Difficulty: 2 of 5Distance to Diagonal 2 (in Geometry) Rating: 4.00
Posted on 2013-06-06 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Distance to Diagonal (in Geometry) Rating: 3.00
Posted on 2013-05-14 by Bractals (Solution Posted, 6 Comments)
Difficulty: 2 of 5Four Reals (in Numbers)
Posted on 2013-05-10 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Triangle from Perimeter (in Geometry) Rating: 4.00
Posted on 2013-05-04 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Circular Billiards Table (in Geometry) Rating: 3.00
Posted on 2013-04-23 by Bractals (Solution Posted, 6 Comments)
Difficulty: 4 of 5Infinite Binary Tree (in Numbers)
Posted on 2013-04-11 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Orthodiagonal Quadrilateral (in Geometry) Rating: 3.00
Posted on 2013-03-24 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Equal Segments (in Geometry)
Posted on 2013-03-20 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Square from four points (in Geometry) Rating: 4.00
Posted on 2013-01-08 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Intersection of Bisectors (in Geometry) Rating: 3.00
Posted on 2012-12-01 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Coincide or Perpendicular (in Geometry) Rating: 3.00
Posted on 2012-10-20 by Bractals (Solution Posted, 0 Comments)
Difficulty: 4 of 5Locus of Midpoints (in Geometry)
Posted on 2012-07-28 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Product of Sum and Product (in Numbers)
Posted on 2012-06-21 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Concylic Feet Part 2 (in Geometry)
Posted on 2012-05-24 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Quadrilateral Locus (in Geometry) Rating: 4.00
Posted on 2012-05-05 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Concylic Feet Part 1 (in Geometry) Rating: 4.00
Posted on 2012-04-28 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Vertices on lines (in Geometry) Rating: 4.00
Posted on 2012-04-25 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Locus of Intersections (in Geometry) Rating: 4.00
Posted on 2012-03-09 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Midpoint Areas (in Geometry) Rating: 4.00
Posted on 2012-02-18 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Orthogonal Conics (in Geometry) Rating: 5.00
Posted on 2011-12-10 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Orthogonal Tangents (in Geometry)
Posted on 2011-11-30 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Ray Ratio (in Geometry) Rating: 5.00
Posted on 2011-10-23 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Cevian Theorem (in Geometry)
Posted on 2011-09-21 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Sum of Ratios (in Geometry)
Posted on 2011-08-25 by Bractals (Solution Posted, 2 Comments)
Difficulty: 4 of 5Maximum Cevian Triangle (in Geometry)
Posted on 2011-06-02 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Concurrent Cevians (in Geometry)
Posted on 2011-05-03 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Lattice Point as Centroid (in Geometry) Rating: 3.00
Posted on 2011-04-10 by Bractals (Solution Posted, 8 Comments)
Difficulty: 2 of 5Parallel Hexagon (in Geometry) Rating: 3.00
Posted on 2011-04-07 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Splitting Hypotenuse (in Geometry) Rating: 4.00
Posted on 2011-04-03 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5All or Exactly Two (in Geometry) Rating: 4.00
Posted on 2011-03-27 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Incenter Assignment (in Geometry)
Posted on 2011-03-23 by Bractals (Solution Posted, 4 Comments)
Difficulty: 2 of 5Partition a Square (in Shapes) Rating: 3.00
Posted on 2011-03-15 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5AECP (in Geometry)
Posted on 2011-03-01 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Circumcircle Fixed Point (in Geometry) Rating: 4.00
Posted on 2010-12-17 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Incircle Fixed Point (in Geometry) Rating: 4.00
Posted on 2010-12-08 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Divide Into Four (in Geometry)
Posted on 2010-12-02 by Bractals (Solution Posted, 3 Comments)
Difficulty: 2 of 5Square Plane Function (in Just Math)
Posted on 2010-11-16 by Bractals (Solution Posted, 3 Comments)
Difficulty: 2 of 5Not ASA, SAS, or SSS (in Geometry)
Posted on 2010-11-01 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5two2one (in Geometry)
Posted on 2010-10-27 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Incircle Bisector (in Geometry) Rating: 3.00
Posted on 2010-10-23 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Tri-Similarity (in Geometry) Rating: 3.00
Posted on 2010-10-17 by Bractals (Solution Posted, 10 Comments)
Difficulty: 2 of 5TriNRect (in Just Math)
Posted on 2010-10-13 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Equal Tangents (in General) Rating: 3.00
Posted on 2010-10-03 by Bractals (Solution Posted, 11 Comments)
Difficulty: 3 of 5Collinear Feet (in Geometry) Rating: 3.00
Posted on 2010-09-26 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Split an Altitude (in Geometry) Rating: 4.00
Posted on 2010-09-24 by Bractals (Solution Posted, 2 Comments)
Difficulty: 4 of 5Lamps in a row (in Geometry)
Posted on 2010-09-03 by Bractals (No Solution Yet, 11 Comments)
Difficulty: 2 of 5Non-rational Quadratic (in Just Math)
Posted on 2010-08-22 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Bisector Inequality (in Geometry) Rating: 4.00
Posted on 2010-08-19 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Intersection in a Quadrilateral (in Geometry)
Posted on 2010-08-14 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Centroid Line (in Geometry)
Posted on 2010-08-10 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Sum of Two Angles (in Geometry)
Posted on 2010-08-01 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Tangent Trapezoid (in Geometry)
Posted on 2010-07-28 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Quadrilateral Equals Overlapping Triangles (in Geometry)
Posted on 2010-07-23 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Inscribe Right Triangle (in Geometry)
Posted on 2010-07-18 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Vertex on a Line (in Geometry)
Posted on 2010-07-11 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Divide a triangle (in Geometry) Rating: 4.00
Posted on 2010-07-07 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Three Perps (in Geometry)
Posted on 2010-06-11 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Triangle Divided (in Geometry) Rating: 2.50
Posted on 2010-04-15 by Bractals (Solution Posted, 8 Comments)
Difficulty: 2 of 5Determine Area (in Geometry)
Posted on 2010-03-27 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Cantilever Structure (in Science) Rating: 3.50
Posted on 2010-02-26 by Bractals (Solution Posted, 6 Comments)
Difficulty: 2 of 5Right Triangles (in Geometry) Rating: 5.00
Posted on 2010-01-22 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Kissing a Cycloid (in Geometry)
Posted on 2010-01-04 by Bractals (Solution Posted, 11 Comments)
Difficulty: 2 of 5More Collinear Points (in Geometry)
Posted on 2009-12-11 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Double Amount (in Geometry)
Posted on 2009-11-25 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Oil Tanker (in Just Math)
Posted on 2009-10-23 by Bractals (Solution Posted, 7 Comments)
Difficulty: 2 of 5Dividing a Rectangle (in Geometry)
Posted on 2009-07-25 by Bractals (Solution Posted, 3 Comments)
Difficulty: 2 of 5Quadrilateral in a rectangle (in Just Math) Rating: 4.00
Posted on 2009-07-17 by Bractals (Solution Posted, 5 Comments)
Difficulty: 2 of 5Collinear intersections (in Geometry)
Posted on 2009-07-13 by Bractals (Solution Posted, 3 Comments)
Difficulty: 2 of 5Reciprocals (in Just Math) Rating: 5.00
Posted on 2009-07-12 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Fly on a cone (in Just Math) Rating: 4.00
Posted on 2009-07-01 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Triangles and Squares (in Geometry)
Posted on 2009-06-17 by Bractals (Solution Posted, 4 Comments)
Difficulty: 2 of 5B-nary (in Numbers) Rating: 1.50
Posted on 2009-04-27 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Integer Side Lengths (in Just Math) Rating: 3.00
Posted on 2009-03-05 by Bractals (Solution Posted, 9 Comments)
Difficulty: 3 of 5Circumcircles (in Geometry) Rating: 3.00
Posted on 2009-01-28 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5xyz radicals (in Just Math) Rating: 4.00
Posted on 2008-10-13 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Half Perpendicular Times Two (in Geometry) Rating: 3.00
Posted on 2008-10-06 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Sum of Squares (in Numbers)
Posted on 2008-09-26 by Bractals (Solution Posted, 6 Comments)
Difficulty: 2 of 5Product of Ratios (in Geometry) Rating: 4.00
Posted on 2008-09-08 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Same Degree Vertices (in Logic) Rating: 4.00
Posted on 2008-08-21 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Cyclic from non-cyclic (in Geometry)
Posted on 2008-07-18 by Bractals (Solution Posted, 0 Comments)
Difficulty: 2 of 5Construct a Square (in Geometry) Rating: 4.00
Posted on 2008-05-29 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Orthogonal Circle (in Geometry) Rating: 4.00
Posted on 2008-05-25 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Center of Gravity of Perimeter (in Geometry) Rating: 5.00
Posted on 2008-05-18 by Bractals (Solution Posted, 14 Comments)
Difficulty: 3 of 5Locus of Triangle (in Geometry) Rating: 3.50
Posted on 2008-05-15 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Congruent Incircles II (in Geometry)
Posted on 2008-05-11 by Bractals (Solution Posted, 6 Comments)
Difficulty: 3 of 5Folded Paper (in Geometry) Rating: 4.00
Posted on 2008-04-29 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Four Circles (in Geometry) Rating: 2.00
Posted on 2008-04-24 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Congruent Incircles (in Geometry) Rating: 3.00
Posted on 2008-04-11 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Sum of Quad. Radii (in Geometry) Rating: 2.33
Posted on 2008-04-02 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Ratio of Radii (in Geometry) Rating: 3.50
Posted on 2008-03-27 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Tangent with Straightedge (in Geometry) Rating: 4.00
Posted on 2008-03-13 by Bractals (Solution Posted, 8 Comments)
Difficulty: 4 of 5Sum of Radii (in Geometry) Rating: 3.67
Posted on 2008-03-12 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Quadrilateral Concurrency (in Geometry) Rating: 3.00
Posted on 2008-03-06 by Bractals (Solution Posted, 6 Comments)
Difficulty: 3 of 53 Distinct Roots Not (in Just Math) Rating: 4.00
Posted on 2008-03-04 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Quadrilateral Inequality (in Geometry) Rating: 2.00
Posted on 2008-02-24 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Center of Gravity (in Geometry)
Posted on 2008-02-06 by Bractals (Solution Posted, 8 Comments)
Difficulty: 3 of 5Primitive Pythagorean Triangles (in Geometry)
Posted on 2008-01-26 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Sum the Points of Tangency (in Geometry) Rating: 3.00
Posted on 2008-01-16 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Area of Pentagon (in Geometry) Rating: 2.00
Posted on 2008-01-07 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Sum Projection Differences (in Geometry) Rating: 2.00
Posted on 2008-01-05 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Locus of Points (in Geometry) Rating: 3.00
Posted on 2007-12-12 by Bractals (Solution Posted, 17 Comments)
Difficulty: 3 of 5Angle from Exradii (in Geometry) Rating: 4.00
Posted on 2007-11-15 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Collinear Intersections (in Geometry)
Posted on 2007-09-13 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Square in a Sector (in Geometry)
Posted on 2007-06-06 by Bractals (Solution Posted, 5 Comments)
Difficulty: 2 of 5Non ordered field (in Just Math) Rating: 3.00
Posted on 2007-06-06 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Kissing Incircles (in Geometry) Rating: 2.50
Posted on 2007-06-01 by Bractals (Solution Posted, 0 Comments)
Difficulty: 3 of 5Locus problem (in Geometry) Rating: 4.00
Posted on 2007-05-27 by Bractals (Solution Posted, 1 Comments)
Difficulty: 4 of 5Minimum perpendicular (in Calculus) Rating: 2.67
Posted on 2007-05-09 by Bractals (Solution Posted, 4 Comments)
Difficulty: 2 of 5Inversion Distance II (in Geometry) Rating: 2.20
Posted on 2007-03-29 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Arithmetic Progression Triangle (in Geometry) Rating: 2.50
Posted on 2007-01-28 by Bractals (Solution Posted, 6 Comments)
Difficulty: 3 of 5Alien Messages (in Science) Rating: 2.80
Posted on 2007-01-23 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5An Odd Function (in Just Math) Rating: 3.83
Posted on 2006-12-28 by Bractals (Solution Posted, 18 Comments)
Difficulty: 3 of 5Parallel Bisections (in Geometry) Rating: 1.00
Posted on 2006-11-27 by Bractals (Solution Posted, 3 Comments)
Difficulty: 5 of 5Ceremonial Stones (in Weights and Scales) Rating: 3.00
Posted on 2006-11-14 by Bractals (Solution Posted, 26 Comments)
Difficulty: 3 of 5Angle Trisection (in Geometry) Rating: 2.50
Posted on 2006-11-09 by Bractals (Solution Posted, 6 Comments)
Difficulty: 3 of 54-gon Probability (in Probability) Rating: 3.25
Posted on 2006-11-03 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Integer Roots (in Just Math) Rating: 2.50
Posted on 2006-10-14 by Bractals (Solution Posted, 5 Comments)
Difficulty: 2 of 5Two Mirrors (in Geometry) Rating: 2.50
Posted on 2006-10-08 by Bractals (Solution Posted, 4 Comments)
Difficulty: 2 of 5Commutative Group (in Just Math) Rating: 3.00
Posted on 2006-09-18 by Bractals (Solution Posted, 8 Comments)
Difficulty: 3 of 5Mine Detection (in Geometry) Rating: 3.00
Posted on 2006-07-29 by Bractals (Solution Posted, 8 Comments)
Difficulty: 3 of 5Angle Measures (in Geometry) Rating: 2.00
Posted on 2006-07-05 by Bractals (Solution Posted, 4 Comments)
Difficulty: 3 of 5Integer Triangles (in Geometry) Rating: 4.00
Posted on 2006-06-21 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Four Congruent Circles (in Geometry)
Posted on 2006-06-14 by Bractals (Solution Posted, 5 Comments)
Difficulty: 2 of 5Complex Reflection (in Geometry) Rating: 3.67
Posted on 2006-04-19 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Integer Solutions (in Numbers) Rating: 2.50
Posted on 2006-03-30 by Bractals (Solution Posted, 16 Comments)
Difficulty: 3 of 5Inversion Distance (in Geometry) Rating: 2.80
Posted on 2006-02-21 by Bractals (Solution Posted, 32 Comments)
Difficulty: 2 of 5Circle's Limit (in Calculus) Rating: 3.00
Posted on 2006-01-13 by Bractals (Solution Posted, 4 Comments)
Difficulty: 2 of 5Quad Angle (in Geometry) Rating: 3.00
Posted on 2005-12-17 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Equal Angles (in Geometry)
Posted on 2005-12-14 by Bractals (Solution Posted, 4 Comments)
Difficulty: 4 of 5Perpendicular Area (in Geometry) Rating: 3.75
Posted on 2005-12-08 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Integer Rep (in Numbers) Rating: 3.50
Posted on 2005-11-24 by Bractals (Solution Posted, 2 Comments)
Difficulty: 4 of 5Set of Spheres (in Geometry) Rating: 4.00
Posted on 2005-11-03 by Bractals (Solution Posted, 7 Comments)
Difficulty: 3 of 5Isosceles Right Triangles (in Geometry) Rating: 3.25
Posted on 2005-10-19 by Bractals (Solution Posted, 10 Comments)
Difficulty: 3 of 5Three Spheres (in Geometry)
Posted on 2005-09-14 by Bractals (Solution Posted, 6 Comments)
Difficulty: 4 of 5Recursive Definition (in Numbers)
Posted on 2005-09-09 by Bractals (Solution Posted, 8 Comments)
Difficulty: 5 of 5Three Balls in a Bowl (in Science) Rating: 3.80
Posted on 2005-09-07 by Bractals (No Solution Yet, 19 Comments)
Difficulty: 3 of 5Triangles and Rectangle (in Geometry) Rating: 3.33
Posted on 2005-08-21 by Bractals (Solution Posted, 6 Comments)
Difficulty: 3 of 5What's Going On? (in Numbers) Rating: 3.00
Posted on 2005-07-05 by Bractals (Solution Posted, 5 Comments)
Difficulty: 4 of 5Tipping Tube (in Science) Rating: 3.75
Posted on 2005-06-23 by Bractals (Solution Posted, 12 Comments)
Difficulty: 3 of 5Perplexing Polynomial Puzzle (in Numbers) Rating: 4.33
Posted on 2005-06-13 by Bractals (Solution Posted, 6 Comments)
Difficulty: 3 of 5Cut Wire (in Calculus)
Posted on 2005-05-20 by Bractals (Solution Posted, 7 Comments)
Difficulty: 2 of 5Electrical Cube (in Science) Rating: 2.50
Posted on 2005-05-17 by Bractals (Solution Posted, 5 Comments)
Difficulty: 3 of 5Triangular Billiard Table (in Geometry) Rating: 2.50
Posted on 2005-05-12 by Bractals (Solution Posted, 9 Comments)
Difficulty: 3 of 5Bowl and Rod (in Science) Rating: 2.00
Posted on 2004-12-31 by Bractals (Solution Posted, 18 Comments)
Difficulty: 4 of 5Construct Ellipse Axes (in Geometry)
Posted on 2004-12-21 by Bractals (Solution Posted, 4 Comments)
Difficulty: 2 of 5Points and Planes (in Geometry) Rating: 3.33
Posted on 2004-12-17 by Bractals (Solution Posted, 10 Comments)
Difficulty: 3 of 5Disk Division (in Geometry) Rating: 4.10
Posted on 2004-12-09 by Bractals (Solution Posted, 17 Comments)
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