Suppose the polygon GHIJ , either a convex polygon or concave polygon have coordinates ,G(a,b), H (p,q), and I (r,s) and J (m,n).
Now the Preimage G H I J is translated 8 units to the left to get the polygon G' H' I' J'.
The coordinates of G' (a-8,b), H'(p-8,q), I'(r-8,s) and J (m-8,n).
The two polygons will be congruent. So their side lengths and interior angles will be equal.
Option (A) G'H' =G H and Option(C) m∠H I J = m∠H'I'J' are correct options.
