12-04 Geo A Rectangles

Front

What is a rectangle?

Back

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

Front

What are the properties of the sides of a rectangle?

Back

1. Opposite sides are parallel. 2. Opposite sides are congruent. 3. Consecutive sides are perpendicular.

Front

Are all rectangles parallelograms?

Back

True. All rectangles are a type of parallelogram.

Front

Are all rectangles squares?

Back

False. While all squares are rectangles, not all rectangles are squares.

Front

If AB = 14 and BC = 9 in rectangle ABCD, what is the length of AD?

Back

AD = 9, since opposite sides of a rectangle are equal.

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 is also doubled.

Front

If the width of a rectangle is halved, what happens to the area?

Back

The area is also halved.

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.