Answer and Explanation
Your Answer is
Correct Answer is K
Explanation
Set the degree of angle B to 3x, then 3x+x+x=180, the solution is x=36, ∠DCB=90° + 36° = 126°, so choose K
36. In the diagram below, △ABC is isosceles. The measure of ∠ABC is 3 times the measure of ∠CAB. What is the measure of ∠DCB ?
