Question

calcule os ângulos x e y ​

Answer 1

a)

$x=60$

$60+60+y+y=360 \\120+2y=360$

$2y=360-120 \\ 2y=240 \\ y=\frac{240}{2} \\ y=120$

b)

$2x+120=360\\ 2x=360-120 \\2x=240$

$x=\frac{240}{2} \\ x=120$

$x+y=180 \\ 120+y=180 \\ y=180-120 \\ y=60$

c)

$40+40+y+y=360 \\ 2y=360-80$

$2y=280 \\ y=\frac{280}{2} \\ y=140$

d)

$x+130=180 \\ x=180-130 \\ x=50$