Question

Find the measure of ∠B if ∠A = 5/2 x + 16 ∠B = 7/2 x + 20 ∠C = 3/2 x + 68 ∠D = 3/2 x + 40

Answer 1

b = 104

Explanation:

A + B + C + D = 360

after sum

360 = 9x + 144

so

x = 24

then

B = (7/2) 24 + 20

B = 104