Question

Part a: if angle a and angle b are vertical angles, what is the value of X?

part b: if angle a and angle b are supplementary angles, what is the measure of angle b?

Answer 1

a. x = 8

b. m<B = 140

Explanation:

a.

m<A = m<B

40 = 5x

x = 8

b.

m<A + m<B = 180

m<B = 180 - m<A

m<B = 180 - 40

m<B = 140