Question

Determine the measures of all the angles in the diagram :/

Answer 1

a) 36, 144

b) 80, 100

Explanation:

a) x + 4x = 180

5x = 180

/5 /5

x = 36

x = 36, 4(36) = 144

b) x - 20 + x = 180

+ 20 + 20

2x = 200

/2 /2

x = 100

100 - 20 = 80, x = 100