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Measuring Angles with Protractors

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Measuring Angles with Protractors worksheet preview

Measuring Angles with Protractors

Protractor and angles illustration

📐 Part 1: Angle Knowledge

1. How many degrees are in a full turn?

90°

180°

270°

360°

2. A right angle measures:

45°

90°

180°

270°

3. Which type of angle is less than 90°?

Acute angle

Right angle

Obtuse angle

Straight angle

4. A half turn is the same as:

90°

180°

270°

360°

📏 Part 2: Measuring Practice

5. When using a protractor, where do you place the centre point?

The centre point goes at the _________________ of the angle.

6. Complete the sentences about angle types:

An obtuse angle measures more than ____° but less than ____°.

A straight angle measures exactly ____°.

7. If you rotate a square by 90°, how many more degrees do you need to make a half turn?
8. Look around your classroom. Name two objects that have right angles (90°):

1. _________________________________

2. _________________________________

🔄 Part 3: Rotation Challenge

9. Draw the position of this triangle after rotating it 180°:
10. Explain in your own words how to measure an angle with a protractor:
11. If a door opens 45°, what type of angle is this? Circle your answer and explain why:

Acute     Right     Obtuse     Straight

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