Question

Calculate m ABC and m CBD, what is the value of x?

Answer 1

(2X) + (6X + 20) = 180

2x + 6x + 20 = 180

8x + 20 = 180

8x = 180-20

8x = 160

8x/8 = 160/8

X = 20

* m ABC = 180

* m CBD = 6x + 20

(X= 20)

6(20) + 20 = 140