|
Home |
Proposed Problems |
Random |
1, 10, 20,
30,
40,
50,
60 |
Previous,
Next |
|
|
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.
|
|
|