Question

Me pueden ayudar? por favor ​

Answer 1

∑∡ = 180 (n - 2) = 180 (5 - 2) = 540°

= > 2x + 2x + 5 + 3x + 5 + x + 15 + x + 20° = 540°

9x + 45° = 540°

x = 55°

A + 2x = 180° => A = 70°

B + 2x + 5° = 180° => B = 65°

C + 3x + 5° = 180° => C = 10°

D + x + 15° = 180° => D = 110°

E + x + 20° = 180° => E = 105°