Question

Please help me!!! I am doing this problem in the unit "Classifying Angles and Angle Addition Postulate"

Answer 1

134°

Explanation:

since BD bisects L ABC,

x/2 + 17 = x - 33

=> multiply by 2, we find:

x+34=2x-66

x-2x=-66-34

-x = -100

x = 100

m L DBC = x-33 = 100-33 = 67°

so, m L ABC = 2 × m L DBC =

2 × 67° = 134°