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Location, location, location (Posted on 2015-03-12) Difficulty: 3 of 5
You are given a drawing of a circle,

Find the location of its center, using a compass only.

No Solution Yet Submitted by Ady TZIDON    
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Solution re(2): To answer the question... | Comment 3 of 8 |
(In reply to re: To answer the question... by Charlie)

In the problem, the centre just needs to be located.


1. Construct circle A1, centred on the circumference of the given circle, O1, intersecting it at B and C.

2. Construct circles B1 and C1, centred on B and C, both passing through A, and another point, D.

3. Construct circle D1, centred on D, and passing through A. This circle intersects A1 at E and F.

4. Construct circles E1 and F1, centred on E and F, and passing through A. Their other point of intersection is then O, the centre of O1.

  Posted by broll on 2015-03-12 23:18:02
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