Year 3 - Maths
Make different sized angles by rotating two lines around a fixed point
Right angles
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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 rotate 2 lines around a fixed point to make different angles. They identify vertices and describe half, quarter and three-quarter turns in terms of right angles.
Lesson Summary
You will learn to create different sized angles by rotating lines around a point.
Key Notes
- An angle is a measurement of turn.
- It doesn't matter how long the lines are, the amount of turn forms the angle.
- The point or angle is where the two lines meet.
Vocabulary To Learn
- Angle: An angle is a measure of turn.
- Rotate: To turn around a fixed point.
- Fixed point: A point that does not change or move.
- Clockwise: Clockwise is the direction that the hands of an analogue clock travel.
- Anticlockwise: Anti-clockwise is the opposite direction to which the hands of an analogue clock travel.
Common Mistakes To Avoid
- No common-mistake notes are available yet for this lesson.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
An angle is a measurement of turn. It doesn't matter how long the lines are, the amount of turn forms the angle.
2. Use this key word in a maths sentence and explain it clearly. 'Angle'
An angle is a measure of turn. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Systems have only one part. Correction: Systems usually contain several parts working together.
More Lessons In This Unit
- Identify and describe right angles Study Guide
- Identify properties of quadrilaterals Study Guide
- Identify properties of triangles Study Guide
- Investigate and draw other polygons with right angles Study Guide
- Investigate the shapes made when rectangles are cut on the diagonal Study Guide
- Join four right angles at a point using different right-angled polygons Study Guide
- Know that a rectangle is a four-sided polygon with four right angles Study Guide
- Know that a right angle describes a quarter turn Study Guide
- Know that a square is a rectangle in which the four sides are of equal length Study Guide
Browse all guides in the Year 3 Maths guide library.