### Home > CCG > Chapter Ch7 > Lesson 7.3.3 > Problem 7-142

7-142.

MUST BE, COULD BE

Here are some more challenges from Mr. Quincey. For each description of a quadrilateral below, say what special type the quadrilateral *must be* and/or what special type the quadrilateral *could be*. Look out: Some descriptions may have no *must be* statements, and some descriptions may have many *could be* statements!

Try drawing shapes that would fit the descriptions Mr. Quincey gives in parts (a) and (b).

My quadrilateral has two right angles.

must be: none

could be: trapezoid, rectangle, or squareThe diagonals of my quadrilateral are perpendicular.

There are no ''must be''s for part (b) either.