< PREVIOUS PROBLEM | NEXT PROBLEM >

In the figure below, ABC is an isosceles triangle (AB = BC), mÐABD = 30 degrees, mÐDBC = 10 degrees, and AC = BD. Prove that: mÐDCB = 20 degrees.

Home | Search | Geometry | Problems | Open Problems | 10 Problems | All Problems | Spanish Problem 60 | Email

Post or view a solution to the problem 60