Question

7. Determine os ângulos indicados pelas letras.
a)
Р
y
115
100°
X
N
spos
R
b)
Q
2x
Р
13x
N
Х
C
s

Answer 1

Resposta:

A)

z+100=180

z=180-100

z=80

x+95=180

x=180-95

x=85

115+85+80+y=360

y=360-280

y=80

B)

2x+x+3x+90=360

6x=360-90

x=270/6

x=45

logo:

2.45=90°

3.45=135°

x+z=180

45+z=180

z=180-45

z=135°