Question

Determine o valor de x no triângulo a seguir:

Answer 1

x+x+20+40= 180.

40 + 20= 60.

180 - 60= 120

2x= 120

x= 60

A= 60

B= 80

C= 40

Answer 2

Resposta:

180

- 40

140

- 20

120

2×= 120

x=120/2

×=60