A square is an equilateral rectangle.

Name another “square.”

What four names may be given to Fig. m p?

Why a quadrilateral? Why a parallelogram? Why a rectangle? Why a square?

LESSON TWENTY-SEVENTH.

REVIEW.

Name six rhomboids. (Diagram [21].)

What three names may be given to Fig. 3?

Why a quadrilateral? Why a parallelogram? Why a rhomboid?