Unit 7: Hwk #4

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 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 one side of a rectangle is 10 cm and the other side is 5 cm, what is the area?

Back

50 cm².

Front

If the length of a rectangle is doubled, how does the area change?

Back

The area becomes twice as large.

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

If the length of a rectangle is 8 cm and the width is 3 cm, what is the perimeter?

Back

22 cm.

Front

What is the measure of each angle in a rectangle?

Back

Each angle measures 90 degrees.

Front

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

Back

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

Front

If a rectangle has a length of 12 cm and a diagonal of 13 cm, what is the width?

Back

5 cm.