Question

Which triangle must be a right triangle and why?

ΔA'B'C' is right because it is the image of ΔABC.

ΔADC is right because AA' intersects AC at A.

ΔBCC' is right because B lies of the line of reflection.

ΔBGC is right because Line E G is perpendicular-to CC'.

Answer 1

Where's the picture? But, I think it may be A without using the image.

Explanation:

Answer 2

its D

Explanation: