Question

Помогите плиз надо решить!

Answer 1

4. 30°+116°+d=180°
d=180°-30°-116°=34°

5. x+y=180°
x+5x=180°
6x=180°
x=30°
y=150°

6. t+z=180°
z=4t
t+4t=180°
5t=180°
t=36°
z=36*4=144°

7. a+b+c=180°
5c+3c+c=180°
9c=180°
c=20°
a=5*20°=100°
b=3*20°=60°