Question

Sabendo que r//s//t//,calcule X e y:

Answer 1

Ola Lcsstn

c) 

a = 120°

b = 180 - a = 60°

e = 180 - 130 = 50°

60 + 50 + c = 180

c = 70°

b + c + d = 180

60 + 70 + d = 180

d = 50°