Introduction to Rectangles

A rectangle is a four-sided polygon with opposite sides that are equal in length and all interior angles are 90 degrees.

Properties of Rectangles

1. Opposite sides of a rectangle are equal in length.

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

3. The area of a rectangle is given by the formula: A = length x width.

4. The perimeter of a rectangle is given by the formula: P = 2(length + width).

Formulas for Rectangles

Area of a Rectangle: A = length x width

Perimeter of a Rectangle: P = 2(length + width)

Example Problems

Example 1: Find the area of a rectangle with a length of 5 units and a width of 8 units.

Solution: A = 5 x 8 = 40 square units

Example 2: Find the perimeter of a rectangle with a length of 12 units and a width of 6 units.

Solution: P = 2(12 + 6) = 2(18) = 36 units

Practice Questions

1. Calculate the area of a rectangle with a length of 10 units and a width of 4 units.
2. Find the perimeter of a rectangle with a length of 15 units and a width of 7 units.
3. If the area of a rectangle is 48 square units and the length is 8 units, what is the width?

Now you can use the formulas and properties of rectangles to solve problems and apply them in real-life situations. Good luck with your studies!

[Rectangle] Related Worksheets and Study Guides:

• ShapesMathematics • Kindergarten
• Area and PerimeterMathematics • Fourth Grade