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 the diagonals of a rectangle?

Back

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

Front

Are all squares rectangles?

Back

True. All squares are rectangles because they have four right angles and opposite sides that are equal.

Front

What is the relationship between opposite sides in a rectangle?

Back

In a rectangle, opposite sides are parallel and equal in length.

Front

If m∠BCA = 58° in rectangle ABCD, what is m∠AEB?

Back

m∠AEB = 116° because the angles in a rectangle are supplementary.

Front

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

Back

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

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Front

If the length of a rectangle is doubled, what happens to the area?

Back

The area of the rectangle is doubled.

Front

What is the relationship between adjacent angles in a rectangle?

Back

Adjacent angles in a rectangle are complementary, meaning they add up to 90°.