Online Geometry Problem 44: Angle, Triangle, Double Angle, 60 Degrees, Congruence. High School, College

Geometry Problems, Online Education

Problem 44. Angles, Triangle, Double Angle, 60 Degrees. Level: High School, SAT Prep, College

In the figure, the measure of angle A is double the measure of angle C. AD and CD are bisectors, and AB = CD.
Prove that x = 60°. See also problems 4, 42, and 43.