What is symmetry?
A 2D shape is symmetrical if a line can be drawn through it and either side is a reflection of the other.
The line is called a line of symmetry.
This is sometimes called a 'mirror line' or 'mirror symmetry', because if you put a mirror on the line, the reflection would show the whole shape.
Watch: How do you find lines of symmetry?
Activity
Have a go at the activity below.
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More on Shape and space
Find out more by working through a topic
- count8 of 8
- count1 of 8
- count2 of 8
- count3 of 8