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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 200°?

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

    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°
  4. 4.

    Put these angles in order, from smallest to largest.

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

    • ?130
    • ?45
    • ?200
    • ?90
  5. 5.

    A reflex angle is smaller than a right angle.

    True False
  6. 6.

    What type of angle is 149°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  7. 7.

    What type of angle is 90°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  8. 8.

    What type of angle is 327°?

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

    What type of angle is 246°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  10. 10.

    What type of angle is 81°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  11. 11.

    What type of angle is 46°?

    1. AAcute
    2. BRight angle
    3. CObtuse
    4. DReflex
  12. 12.

    What type of angle is 282°?

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

    What type of angle is 27°?

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

    What type of angle is exactly 90°?

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

    How many degrees is a half turn?

    °
  16. 16.

    How many degrees is a three-quarter turn?

    °
  17. 17.

    What type of angle is 11°?

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

    What type of angle is 57°?

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

    What type of angle is 108°?

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

    Select all the ACUTE angles.

    • A35°
    • B90°
    • C72°
    • D145°
    • E15°
    • F180°
Celeste International School

Answer key

Angles — Types of angles

  1. 1.90 °
  2. 2.C. Reflex
  3. 3.A. Greater than 180° and less than 360°
  4. 4.45, 90, 130, 200
  5. 5.False
  6. 6.C. Obtuse
  7. 7.B. Right angle
  8. 8.D. Reflex
  9. 9.D. Reflex
  10. 10.A. Acute
  11. 11.A. Acute
  12. 12.D. Reflex
  13. 13.A. Acute
  14. 14.B. Right angle
  15. 15.180 °
  16. 16.270 °
  17. 17.A. Acute
  18. 18.A. Acute
  19. 19.C. Obtuse
  20. 20.A. 35°; C. 72°; E. 15°