Question

em cada item,calcule o valor de X,Y e Z, em grau.

Answer 1

a
2y + z = 180 graus
y + 40 + z = 180 graus
x + 60 = 180
y + 40 = 2y
1
x + 60 = 180 ***
x = 180 - 60
x = 120 graus ****
2
y + 40 = 2y
y - 2y = -40
- y = -40
y = 40 ****

3
2y + z = 180
2 ( 40 ) + z = 180
80 + z = 180
z = 180 - 80
z = 100 ***

b
3z + z + 70 = 180
y = 3z
y + z + 70 = 180
x = 30 ***

1
3z + z + 70 = 180
4z = 180 - 70
4z = 110
z = 110/4 =27,5 ****

y = 3z
y = 3 ( 27,5 )
y = 82,5 ****