Symmetry
Ages 7–11Difficulty adapts to you
Symmetry
A shape has symmetry if you can fold it along a line and both halves match perfectly. That line is called the line of symmetry.
Your goals
- ✓You can find lines of symmetry in shapes.
- ✓You can use line of symmetry, reflection correctly.
- ✓You can imagine folding along the line to see whether both halves match.
Words to know
- line of symmetry:
- A line that divides a shape into matching mirror-image halves.
- reflection:
- A mirror image across a line.
Examples
- 1A square has 4 lines of symmetry.
- 2A rectangle has 2 lines of symmetry (through the middle). A circle has infinite!
Check these
- • Do not count a diagonal or centre line that does not create matching halves.
- • Keep every number, symbol, label, and unit in its correct place.
- • Show enough working to check how you reached your answer.
Helpful habits
- • Read the whole question before choosing what to do.
- • Show one clear step at a time and check each step.
- • If you are stuck, draw a model, try smaller numbers, or revisit the example.
Now try your own
Create your own symmetry example, solve it, and explain how you checked it.
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