tolong dong siapa aja.. pliss...

a). 36

maaf yang lainnya tdk bisa sy jwb ^_^

A) 2x +3x = 180°
5x = 180°
x = 180° : 5
× = 36°
B) <D = 2x = 2 × 36°
= 72°
D) <R = 3x = 3 × 36°
= 108°

yg C gtw, maap klo slh