4 Written Questions
4 Multiple Choice Questions
 ...then the parallelogram is a rhombus.
 a) Propose a new conditional by negating the original conclusion. b) Show the absurdity of the new conditional.
 ...then the parallelogram is a rectangle.
 ...then the parallelogram is a rhombus.
3 True/False Questions

If one pair of sides of a quadrilateral are both parallel and congruent... → ...then the quadrilateral is a parallelogram.

rhombus → A quadrilateral with four congruent sides and four right angles.

rectangle → A quadrilateral with four congruent sides and four right angles.