Year 3 - Maths
Draw polygons on isometric paper
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 polygons on isometric paper.
Key Notes
- Different patterns on the paper allow you to draw polygons with different properties.
- A ruler helps to draw shapes accurately.
- Mark the vertices of the shape and join them with a ruler to create polygons.
Vocabulary To Learn
- Isometric: Isometric means distances between points stay the same. In this lesson we use isometric paper which has equally spaced dots or points.
- Perpendicular: Two lines which meet at a right angle are perpendicular.
- Parallel: Parallel lines are straight lines that are always the same distance apart. They never get closer together or further apart.
Common Mistakes To Avoid
- Pupils may not identify when a polygon has more than one pair of parallel or perpendicular sides especially when the polygon is not a rectangle.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Different patterns on the paper allow you to draw polygons with different properties. A ruler helps to draw shapes accurately.
2. Use this key word in a maths sentence and explain it clearly. 'Isometric'
Isometric means distances between points stay the same. In this lesson we use isometric paper which has equally spaced dots or points. 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 identify when a polygon has more than one pair of parallel or perpendicular sides especially when the polygon is not a rectangle. Correction: Make use of right angle checkers to identify that some shapes have more than one right angle and take time to link this to perpendicular sides.
More Lessons In This Unit
- Construct quadrilaterals with and without parallel and perpendicular sides Study Guide
- Draw shapes with given properties Study Guide
- Draw shapes with given properties on a range of geometric grids 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.