pliss dijawab.....besok dikumpul

1. 2a+3a+35=180°
5a+35=180°
5a=180-35°
5a=145°
A=145:5
A=29°
2. 2b+2b+2b=180°
6b=180°
B=180:6
=30°
3. 3c+c+C=180°
5c=180°
C=180:5
=36°

(i) 2a°+3a°+35°=180°
5a°+35°=180°
5a°=180°-35°
5a°=145°
a=145°/5°
a=29°
Jadi, nilai a adalah 29°

(ii) 2b°+2b°+2b°=180°
6b°=180°
b=180°/6°
b=30°
Jadi, nilai b adalah 30°

(iii) c°+3c°+c°=180°
5c°=180°
c=180°/5°
c=36°
Jadi, nilai c adalah 36°