Answer:
if a number end's with zero then it is divisible by zero.
Step-by-step explanation:
A'(11, -1)
B'(12, -5)
C'(10, -3)
60°
angle A +angle B +angle C = 180
30° +B+90°= 180
120°+B=180°
B=180°-120°
B=60°
