perplexus.info :: Geometry : Parallel Bisections

Parallel Bisections (Posted on 2006-11-27)

In triangle ABC, the perpendiculars from A to the internal bisectors of angles B and C meet those bisectors at X and Y. Prove that XY is parallel to BC.

See The Solution Submitted by Bractals

Rating: 1.0000 (1 votes)

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re(2): Solution -- ok, I see

Comment 3 of 3 |

(In reply to re: Solution by Charlie)

I see that there are two right triangles sharing a base and having equal angles at the vertex, making their join an isosceles triangle.

Posted by Charlie on 2006-11-27 13:28:02

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