Properties of Rectangles

Front

What is a rectangle?

Back

A rectangle is a quadrilateral with four right angles and opposite sides that are equal in length.

Front

What are the properties of a rectangle?

Back

1. Opposite sides are equal in length. 2. All angles are 90 degrees. 3. The diagonals are equal in length.

Front

How do you find the length of the diagonal in a rectangle?

Back

Use the Pythagorean theorem: d = √(length² + width²).

Front

If the length of a rectangle is 10 cm and the width is 5 cm, what is the perimeter?

Back

Perimeter = 2(length + width) = 2(10 + 5) = 30 cm.

Front

If the length of a rectangle is 12 cm and the width is 8 cm, what is the area?

Back

Area = length × width = 12 × 8 = 96 cm².

Front

What is the relationship between the diagonals of a rectangle?

Back

The diagonals of a rectangle are equal in length and bisect each other.

Front

What is the sum of the interior angles of a rectangle?

Back

The sum of the interior angles of a rectangle is 360 degrees.

Front

Which property distinguishes rectangles from other quadrilaterals?

Back

Rectangles have four right angles.

Front

If one angle of a rectangle is 90 degrees, what are the measures of the other angles?

Back

All angles are 90 degrees.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.