Parallelograms, Rhombi, Rectangles, and Squares

Front

What is a parallelogram?

Back

A parallelogram is a four-sided figure (quadrilateral) with opposite sides that are parallel and equal in length.

Front

What are the properties of a rectangle?

Back

A rectangle has four right angles, opposite sides that are equal in length, and the diagonals are equal in length.

Front

What is a rhombus?

Back

A rhombus is a four-sided figure (quadrilateral) where all sides are of equal length, and opposite angles are equal.

Front

What is a square?

Back

A square is a special type of rectangle and rhombus where all four sides are equal in length and all angles are right angles.

Front

Is a square a rectangle?

Back

Always. A square meets all the criteria of a rectangle.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the area of a square?

Back

Area = side × side (or side²).

Front

What is the formula for the area of a rhombus?

Back

Area = (diagonal1 × diagonal2) / 2.

Front

What is the relationship between the diagonals of a rectangle?

Back

The diagonals of a rectangle are equal in length.

Front

What is the relationship between the diagonals of a rhombus?

Back

The diagonals of a rhombus bisect each other at right angles.