This worksheet teaches students to estimate, measure and name angles in degrees, read both protractor scales, find reflex angles, and explain why some shapes tessellate. The worksheet is split into warm-up questions, standard questions and then extension questions to test you.
The concepts it covers:
- Angles are measured in degrees (°). A full turn (a revolution) is 360°.
- Angle names: acute is less than 90°; right is exactly 90°; obtuse is between 90° and 180°; straight is exactly 180°; reflex is between 180° and 360°.
- A protractor has two scales. Use the scale that starts at 0 on the arm you lined up.
- A reflex angle is the "outside" angle. Measure the smaller angle, then take it away from 360°.
What your child will practise:
- Naming an angle from its size.
- Estimating an angle using 90° and 180° as benchmarks.
- Reading a protractor, choosing the correct scale.
- Finding a reflex angle from the smaller angle.
- Using angles around a point to explain why some shapes tessellate.
Every section opens with a worked example, and the download includes a full answer key with step-by-step solutions and teaching notes on the mistakes students most commonly make.
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