Question

Calcule as medidas de X e A

Answer 1

a)
3x + 2x + x = 90°

6x =90°

x = 90°÷ 6

x=15°

b)

4a + 3a + 2a + a = 180°

10a = 180°

a = 180° ÷ 10

a= 18°