🔢 Mathematics · Geometry
Regular and irregular polygons
Distinguish between regular and irregular polygons based on reasoning about equal sides and equal angles
Typical age: 9–10 years
“If you show your child a stop sign (regular octagon) and a wonky eight-sided shape, can they explain which is regular and which is irregular — and why?”
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Needs first
Unlocks next
- 2-D shapes (age 10+)
Drawing regular/irregular polygons benefits from property knowledge
- Classifying shapes by propertiesREQUIRED
Hierarchy includes regular/irregular distinction from Y5
- Types of angles (age 11+)REQUIRED
Describing regular polygons requires knowing the distinction from KS2
- Precise Maths Vocabulary
Regular/irregular polygon vocabulary exercises geometric precision