# Rectangles(KS2, Year 6)

## The Lesson

A rectangle is a four sided shape with four right angles. ## Dictionary Definition

The Oxford English Dictionary defines a rectangle as "a plane figure with four straight sides and four right angles, opposite sides being parallel and equal in length; especially one in which adjacent sides are unequal, as contrasted with a square."

## Properties of Rectangles

• Opposite 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. They cross each other half-way along their lengths. ## The Perimeter of a Rectangle

The perimeter of a rectangle is given by the formula: In this formula, b is the length of the base and h is the height of the rectangle.

## The Area of a Rectangle

The area of a rectangle is given by the formula: In this formula, b is the length of the base and h is the height of the rectangle.

## 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.
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