Show me a shape quadrilateral
what type of quadrilaterals has perpendicular sides.
Prove: if a quadrilateral has one pair of sides both parallel and congruent then the quadrilateral is a parallelogram.
I think I have to prove that the other opposite sides are also parallel, but I am not sure how to do it. It is given that the other opposite sides are congruent and parallel.
ABCD is a rectangle in which diagonals AC bisects angle A as well as angle C. Show that ABCD is a squre.
give it to me now please please..................
does a quadrilateral have to have four congruent sides