1. Estimating & Measuring Angles – Worksheet A
The worksheet is in 2 sizes.

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3. Estimating & Measuring Angles
1) Estimate the angle before you measure.
2) Center the protractor on the vertex (corner).
3) Line up 0 with the base line.
4) Count up from 0 until you reach the second line.
Example:
30°
Base line

4. Estimating & Measuring Angles①
1) Estimate the angle before you measure.
2) Center the protractor on the vertex (corner).
3) Line up 0 with the base line.
4) Count up from 0 until you reach the second line.
Estimate:
Measurement: 5)
Example:
30° 6)
Estimate:
Measurement:
45°
Base line
Estimate:
Measurement: 1) 2)
Estimate:
Measurement:
Estimate:
Measurement: 7)
Base line
Base line
Estimate:
Measurement: 3) 8)
Estimate:
Measurement: 9)
Estimate:
Measurement: 4)
Estimate:
Measurement:

5. Estimating & Measuring Angles①
40°
60°
10°
130°
35°
170°
70°
20°
1) Estimate the angle before you measure.
2) Center the protractor on the vertex (corner).
3) Line up 0 with the base line.
4) Count up from 0 until you reach the second line.
Estimate:
Measurement: 5)
Example:
30° 6)
Estimate:
Measurement:
45°
Base line
Estimate:
Measurement:
Estimate:
Measurement: 1) 2)
Estimate:
Measurement: 7)
Base line
Base line
Estimate:
Measurement: 3) 8)
Estimate:
Measurement: 9)
Estimate:
Measurement: 4)
Estimate:
Measurement:

6. Estimating & Measuring Angles②
Estimate:
Measurement:
40°
75°
110°
105°
145°
200°
320°
275°
60°
300°
335° 1) 2)
Estimate:
Measurement:
Estimate:
Measurement: 3)
Estimate:
Measurement: 5) 6) 4)
Estimate:
Measurement:
Estimate:
Measurement: 8)
Estimate:
Measurement: 9)
10) 7)
Estimate:
Measurement:
Estimate:
Measurement:
Estimate:
Measurement:
11)
Estimate:
Measurement:

7. Estimating & Measuring Angles①
1) Estimate the angle before you measure.
2) Center the protractor on the vertex (corner).
3) Line up 0 with the base line.
4) Count up from 0 until you reach the second line.
Estimate:
Measurement: 5)
Example:
30° 6)
Estimate:
Measurement:
45°
Base line
Estimate:
Measurement: 1) 2)
Estimate:
Measurement:
Estimate:
Measurement: 7)
Base line
Base line
Estimate:
Measurement: 3) 8)
Estimate:
Measurement: 9)
Estimate:
Measurement: 4)
Estimate:
Measurement:

8. Estimating & Measuring Angles②
Estimate:
Measurement: 1) 2)
Estimate:
Measurement:
Estimate:
Measurement: 3)
Estimate:
Measurement: 5) 6) 4)
Estimate:
Measurement:
Estimate:
Measurement: 8)
Estimate:
Measurement: 9)
10) 7)
Estimate:
Measurement:
Estimate:
Measurement:
Estimate:
Measurement:
11)
Estimate:
Measurement:

11. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
Any feedback would be appreciated .
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