Problem 60.
Isosceles triangle and angles.
Level: High School, SAT Prep, College
Hints:
Triangle Congruence
In the figure below, ABC is an
isosceles triangle (AB = BC), mÐABD
= 30º, mÐDBC
= 10º, and AC = BD. Prove that:
mÐDCB
= 20º.
Post your solutions or ideas in the
blog.
