Year 10 - Maths
Checking and securing understanding of angle notation and drawing/measuring angles
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 use their knowledge of corresponding, alternate and co-interior angles to reason through and solve more complicated problems.
Lesson Summary
You will learn to draw and measure any angle and am confident with various angle notations.
Key Notes
- A protractor is used to draw angles.
- A protractor is used to measure the size of angles.
- A protractor measures angles in degrees.
Vocabulary To Learn
- Angle: An angle is a measure of turn. It is often displayed as the rotation between two line segments.
- Reflex angle: An angle that is greater than a straight line (i.e. greater than 180°) is a reflex angle.
Common Mistakes To Avoid
- Pupils read from the incorrect values on the protractor.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
A protractor is used to draw angles. A protractor is used to measure the size of angles.
2. Use this key word in a maths sentence and explain it clearly. 'Angle'
An angle is a measure of turn. It is often displayed as the rotation between two line segments. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils read from the incorrect values on the protractor. Correction: Encourage pupils to consider the type of angle they are measuring. If it is an acute angle, will it really measure 122°?
More Lessons In This Unit
- Checking and securing understanding of advanced angle facts Study Guide
- Checking and securing understanding of basic angle facts Study Guide
- Checking and securing understanding of exterior angles Study Guide
- Checking and securing understanding of interior angles Study Guide
- Checking and securing understanding of polygons Study Guide
- Checking and securing understanding of properties of shapes Study Guide
- Checking and securing understanding on chains of reasoning with angle facts Study Guide
- Forming equations with angles Study Guide
- Problem solving with angles Study Guide
Browse all guides in the Year 10 Maths guide library.