Question

x+y+z e ingual a?
$x + y + z \: e \: igual \: a$
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Answer 1

Resposta:

x e y: opostos pelo vértice, logo, x = y.

x= y = 42

42+42+2a = 360

a = 138

127 + 42 + 138 + z = 360

z = 53

x + y + z = 42+42+53 = 137