Question

Determine x em cada um dos triângulos:​

Answer 1

a) x+30°+50°=180°

x+80°=180°

x=180°-80°=100°

b) x+90°+30°=180°

x+120°=180°

x=180°-120°=60°

c) x+65°+50°=180°

x+135°=180°

x=180°-135°=45°

d) x+50°+x+10°=180°

2x+60°=180°

2x=180°-60°

2x=120°

$x = \frac{120°}{2} = 60°$

e) x+50°+x+10°+x-30°=180°

3x+30°=180°

3x=180°-30°

3x=150°

$x = \frac{150°}{3} =50°$