To solve the problem of measuring the angles using a protractor, we need to carefully observe each diagram and read the angle values from the protractor. Here's the step-by-step solution for each angle:
1)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 90° mark.
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Answer: 90°
2)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 90° mark.
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Answer: 90°
3)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 120° mark.
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Answer: 120°
4)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 60° mark.
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Answer: 60°
5)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 135° mark.
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Answer: 135°
6)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 75° mark.
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Answer: 75°
7)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 150° mark.
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Answer: 150°
8)
- The angle is measured starting from the baseline (0°) on the left.
- The blue line extends to the 120° mark.
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Answer: 120°
Final Answers:
1. 90°
2. 90°
3. 120°
4. 60°
5. 135°
6. 75°
7. 150°
8. 120°
Boxed Final Answer:
\[
\boxed{90^\circ, 90^\circ, 120^\circ, 60^\circ, 135^\circ, 75^\circ, 150^\circ, 120^\circ}
\]
Parent Tip: Review the logic above to help your child master the concept of measuring angles worksheet 4th grade.
