If quadrilateral abcd is congruent to quadrilateral efgh then what corresponding side is congruent to side gh

CD

Step-by-step explanation:

Given that quadrilateral abcd is congruent to quadrilateral efgh

This means in the same order we have to take corresponding sides and angles and they would be equal.

Hence we have

angles : A = E: B = F: C=G:D=H

Sides: AB = EF:BC=FG:CD=GH:DA = HD

Hence from these we can conclude that CD = GH

So answer is CD