Question

Angle ABC is formed by segments AB and BC on the coordinate grid:
Angle ABC is rotated 90 degrees counterclockwise about the origin to form angle A’B’C’. Which statement shows the measure of angle A’B’C’?

m∠A’B’C’ = 90 degrees
m∠A’B’C’ = 180 degrees
m∠A’B’C’ = m∠ABC m
∠A’B’C’ = 2 × m∠ABC

Answer 1

@rational
i think its b?

Answer 2

@rileychampion365

Answer 3

I do not quite understand the question, but from what I got it should be B.