Question

alguem me ajuda?? to precisando mtt

Answer 1

5) Alternativa C
x=90-40
x=50°
y=180-2x
y=180-100
y=80°

6) Alternativa D
x=90-34
x=56°
y=360-90-90-x
y=180-56
y=124

7) Alternativa D
x=(90+36)-45
x=126-45
x=81°