Jika g // h, sudut A2= 4x, sudut A3= 5x, dan sudut B3= 8p°, nilai p=

A2=4*
A3=5*
B3=8p°

5*+4*=180°
9*=180°
*=180:9
*=20°

5*=5×20°
=100°

B3=5*
B3=8p°
8p°=100°
p=100:8
=12,5°