In the red

Two congruent semicircles with their centres and a chord. Prove that the two red triangles are congruent as well.

Scroll down for a solution to this problem.


Solution by Matthew Arcus.

🤞 Don’t miss these puzzles!

Subscribe to the weekly geometry puzzle e-mail.

Leave a Reply

Your email address will not be published. Required fields are marked *

Optionally add an image (JPEG only)