|
Home |
Proposed Problems |
1, 10, 20,
30,
40,
50,
60 |
Previous, Next
|
|
Problem 2.
Triangle, Angles. Level: High School, SAT Prep, College
geometry |
|
Prove the following: if, in a triangle
ABC, mÐ
BAO = mÐ
OAC = 20°, mÐ
ACO = 10°,and mÐ
OCB = 30°, then mÐ
OBC = 80°.
|
|