Home > Proposed Problems > Previous, Key theorems, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 30, 40, 50, Next

The figure shows a triangle ABC, mÐ A = 4x, mÐ C = 3x, mÐ CBD = 5x, and AB = CD. Find x.

Last updated: July 1, 2007