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Problem 326. Equilateral triangle, Semicircle, Equal arcs.
Level: High School, SAT Prep, College geometry.

The figure shows an equilateral triangle ABC. D and E are points dividing the semicircle of diameter BC into three equal arcs. Prove that the lines AD and AE divide the side BC into three equal parts. Post a comment.

Equilateral triangle and semicircle problem 
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