Question

Calcule as medidas dos ângulos abaixo.↑​

Answer 1

a) 180 = 90 + x + 2x

3x = 90

x = 90 / 3

x = 30

b) 180 = 5x + 10 + 4x - 10

( corta o 10)

180 = 9x

x = 180/9

x = 20

c) 180 = 90 + x - 5 + 2x + 5

(corta o 5)

90 = 3x

x = 90/3

x = 30

Answer 2

A) 90 + 3x =180

3x = 180-90

x=90/3 x=30

b)5x+10°+4x-10°=180

9x=180

x=180/9 x=20

c) x-5+2x+5=180

3x=180

x=180/3

x=60