Special Parallelograms

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 is a parallelogram with four right angles and opposite sides that are equal in length.

Front

What is a rhombus?

Back

A rhombus is a parallelogram with all four sides of equal length.

Front

What is a square?

Back

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

Front

If m∠B is 54°, what is m∠CDB in a parallelogram?

Back

27° (because opposite angles are equal and consecutive angles are supplementary).

Front

In a square, what is the measure of each angle?

Back

Each angle in a square measures 90°.

Front

What is the relationship between the angles in a rhombus?

Back

The opposite angles in a rhombus are equal, and the consecutive angles are supplementary.

Front

How do you find the measure of an angle in a rectangle?

Back

All angles in a rectangle measure 90°.

Front

If the length of one side of a square is 40, what is the measure of the angles?

Back

Each angle measures 90°.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.