Question

quanto vale a,b,c,d ? (triângulo)

Answer 1

a=40°
b=60°
c=80°
d=60°
:)

Answer 2

Olá Davif

b = 180 - 120 = 60

d = b = 60 

c + d + 40 = 180

c + 60 + 40 = 180

c = 180 - 100 = 80

a + b + c = 180

a + 60 + 80 = 180

a = 180 - 140 = 40

a = 40°
b = 60°
c = 80°
d = 60°

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