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Celeste International School

Grade 4 · Worksheet

Angles

Types of angles

Name: ______________________________Date: ______________Score: ______ / 20
  1. 1.

    How many degrees are there in a right angle?

    °
  2. 2.

    What type of angle is 45°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  3. 3.

    What type of angle is 120°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  4. 4.

    What type of angle is 200°?

    1. AAcute
    2. BObtuse
    3. CReflex
    4. DRight angle
  5. 5.

    An angle of exactly 90° is called a…

    1. ARight angle
    2. BAcute angle
    3. CObtuse angle
    4. DReflex angle
  6. 6.

    Which describes a reflex angle?

    1. AGreater than 180° and less than 360°
    2. BLess than 90°
    3. CExactly 90°
    4. DBetween 90° and 180°
  7. 7.

    How many degrees are there in four right angles?

    °
  8. 8.

    What type of angle is 89°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  9. 9.

    Put these angles in order, from smallest to largest.

    Write the order (smallest to largest) in the boxes:

    • ?130
    • ?45
    • ?200
    • ?90
  10. 10.

    An obtuse angle is between 90° and 180°.

    True False
  11. 11.

    A reflex angle is smaller than a right angle.

    True False
  12. 12.

    What type of angle is 117°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  13. 13.

    What type of angle is 158°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  14. 14.

    What type of angle is 149°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  15. 15.

    What type of angle is 136°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  16. 16.

    What type of angle is 90°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  17. 17.

    What type of angle is 234°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  18. 18.

    What type of angle is 152°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  19. 19.

    What type of angle is 327°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  20. 20.

    What type of angle is 135°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
Celeste International School

Answer key

Angles — Types of angles

  1. 1.90 °
  2. 2.A. Acute
  3. 3.C. Obtuse
  4. 4.C. Reflex
  5. 5.A. Right angle
  6. 6.A. Greater than 180° and less than 360°
  7. 7.360 °
  8. 8.A. Acute
  9. 9.45, 90, 130, 200
  10. 10.True
  11. 11.False
  12. 12.C. Obtuse
  13. 13.C. Obtuse
  14. 14.C. Obtuse
  15. 15.C. Obtuse
  16. 16.B. Right angle
  17. 17.D. Reflex
  18. 18.C. Obtuse
  19. 19.D. Reflex
  20. 20.C. Obtuse