Two semicircles contain a triangle. The centre of the right semicircle is shown. Prove that the triangle is isosceles.

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- Post author By Rik D. Tangerman
- Post date September 26, 2022
- No Comments on The common triangle

Two semicircles contain a triangle. The centre of the right semicircle is shown. Prove that the triangle is isosceles.

Scroll down for a solution to this problem.