GEOMETRY
posted by Twg .
A quadrilateral is a _________ if and only if all of its sides are congruent and its diagonals are congruent

Enough, Twg!!
These answers are in your text materials. You're paying for this class, so you should get your money's worth by studying your text. Fishing for answers on the Internet is cheating you and depriving you of the education you've paid for.