# Symmetry

Year 3 & 4

Symmetry Year 3 & 4 KS2. Maths homework help with rotational symmetry and completing symmetry drawings.

## Pick a level

## Rotational symmetry

When a shape has rotational symmetry it means that you can turn it to fit into itself. The point on where the shape turns around is the centre of rotational symmetry. The order of rotational symmetry is the number of times that it fits into itself when it's turned 360˚.

Rotational & Line Symmetry explained in this clear video.

## Shape Symmetry

Different shapes have a different amount of order of rotational symmetry.

Here is a list of common shapes and how many order of rotational symmetry they have.

## Square4 lines of symmetry | ## Rectangles5 lines of symmetry | ||

## Isosceles Triangle1 lines of symmetry | ## Equilateral Triangle3 lines of symmetry | ||

## CircleInfinite lines of symmetry | ## Ellipse2 lines of symmetry | ||

## Rhombus2 lines of symmetry | ## Trapezium4 lines of symmetry | ||

## Pentagon5 lines of symmetry | ## Hexagon6 lines of symmetry | ||

## Octagon8 lines of symmetry |

## Drawing reflections

When drawing a reflection remember that the object is flipped.

- Start by marking the points of the object by counting how far away they are from the mirror line.
- Join up the dots to make the image.

Create the pattern in symmetry. Try horizontal lines, vertical lines and diagonal lines.