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It has become obvious that the Shapes category was in way over its head with all sorts of geometrical problems. So, the hard-core Geometry problems will now reside here, where they will fit in much better.
Difficulty: 3 of 5 Latest: Orthogonal Conics Rating: 5.00
An ellipse and hyperbola have the same foci.

Prove that they are orthogonal.
(Solution Posted, 2 Comments) Submitted on 2011-12-10 by Bractals   
Page 1 of 26   next >>    
Difficulty: 3 of 5Orthogonal Tangents |
Posted on 2011-11-30 by Bractals (Solution Posted, 2 Comments)
Difficulty: 3 of 5Angle of view - Parabola | Rating: 3.00
Posted on 2011-11-13 by Jer (No Solution Yet, 2 Comments)
Difficulty: 1 of 5Slope products |
Posted on 2011-11-08 by Jer (Solution Posted, 3 Comments)
Difficulty: 2 of 5Ray Ratio | Rating: 5.00
Posted on 2011-10-23 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Getting Quadratic and Cubic with Astroid |
Posted on 2011-10-22 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Cevian Theorem |
Posted on 2011-09-21 by Bractals (Solution Posted, 1 Comments)
Difficulty: 2 of 5Five out of one |
Posted on 2011-09-06 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Sum of Ratios |
Posted on 2011-08-25 by Bractals (Solution Posted, 2 Comments)
Difficulty: 2 of 5Rating our neighbours |
Posted on 2011-08-08 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Three spheres |
Posted on 2011-07-08 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Maximum Cevian Triangle |
Posted on 2011-06-02 by Bractals (Solution Posted, 1 Comments)
Difficulty: 3 of 5Concurrent Cevians |
Posted on 2011-05-03 by Bractals (Solution Posted, 3 Comments)
Difficulty: 3 of 5Lattice Point as Centroid | Rating: 3.00
Posted on 2011-04-10 by Bractals (Solution Posted, 8 Comments)
Difficulty: 2 of 5Parallel Hexagon | Rating: 3.00
Posted on 2011-04-07 by Bractals (Solution Posted, 1 Comments)
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