CPM Homework Banner

Decide if the following statements are true or false. If a statement is true, explain how you know it is always true. If a statement is false, provide a diagram or a description of a counterexample.

Refer to the Math Notes box in Lesson 7.1.1 for help.

  1. If the diagonals of a quadrilateral are congruent, then it is a rectangle.

    Can you draw a quadrilateral with congruent diagonals that is not a rectangle?

  2. If a quadrilateral has four congruent angles, then it is a rectangle.

    What kinds of quadrilaterals have four congruent angles?

  3. All rhombi are parallelograms.

  4. The diagonals of a parallelogram bisect the angles.