Question

Vejam a ft e responda pfvr​

Answer 1

Resposta:

a) 20°=x

angulo=20°+20°=40°

b) 7x=5x+12°

7x-5x=12°

2x=12°

x=12°/2

x=6°

angulo=42°+42°=84°

c) 3x-120°=x

3x-x=120°

2x=120°

x=120°/2

x=60°

angulo=60°+60°=120°