Year 3 - Maths
Draw shapes with given properties on a range of geometric grids
Parallel and perpendicular sides in polygons
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will investigate ways to compose and decompose polygons. They will investigate quadrilaterals with and without parallel and perpendicular sides.
Lesson Summary
You will learn to draw shapes with given properties on a range of geometric grids.
Key Notes
- If you know the properties of a shape you can use a ruler and a range of grids to create it.
- Lines are perpendicular when they are at right angles to each other.
- Lines are parallel because they are always the same distance apart.
Vocabulary To Learn
- Property / properties: A property is a character or quality something has.
Common Mistakes To Avoid
- Pupils may not recognise that the same type of shape, such as a pentagon, can have different properties such as parallel or perpendicular lines.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
If you know the properties of a shape you can use a ruler and a range of grids to create it. Lines are perpendicular when they are at right angles to each other.
2. Use this key word in a maths sentence and explain it clearly. 'Property / properties'
A property is a character or quality something has. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils may not recognise that the same type of shape, such as a pentagon, can have different properties such as parallel or perpendicular lines. Correction: Make use of geoboards if possible to create a pentagon and physically move one vertex. Focus on the fact that the shape still has 5 vertices and discuss what is similar and different.
More Lessons In This Unit
- Construct quadrilaterals with and without parallel and perpendicular sides Study Guide
- Draw polygons on isometric paper Study Guide
- Draw shapes with given properties Study Guide
- Identifying parallel lines Study Guide
- Investigate different ways of decomposing a polygon Study Guide
- Make and draw quadrilaterals on circular geoboards Study Guide
- Make and draw shapes with and without parallel and perpendicular sides Study Guide
- Make and draw triangles on circular geoboards Study Guide
- Make shapes by joining two polygons in different ways Study Guide
Browse all guides in the Year 3 Maths guide library.