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What Is a Square? (Mathematics Lesson)

What Is a Rectangle?

A rectangle is a four sided shape with four right angles.

Properties of Rectange

  • Alternate sides of a rectangle are of equal length.


  • All angles in a rectangle are right angles.


  • Opposite sides of a rectangle are parallel.


  • All angles of a rectangle add up to 360°.

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

The Perimeter of a Rectangle

The perimeter of a rectangle is given by the formula:



where b is the length of the base of the rectangle and h is the height of the rectangle.

The Area of a Rectangle

The area of a rectangle is given by the formula:



where b is the length of the base of the rectangle and h is the height of the rectangle.
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Geometry Lessons
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Note

A RECTANGLE IS A POLYGON

A rectangle is a type of polygon.

A polygon is a 2-dimensional shape with straight sides.

A rectangle is an irregular polygon. It has different length sides.

A RECTANGLE IS A QUADRILATERAL

A rectangle is a quadrilateral.

A rectangle is a four-sided polygon.

Parallelograms, squares and trapezoids are also quadrilaterals.