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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 762 · 40 sums
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The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°. On a straight line: the two angles add up to 180°. In a triangle: the three angles add up to 180°. Around a point: 360°. Clock: each hour mark is 30° apart (360° ÷ 12).

NameDateTime takenScore ___ / 40
  1. 1.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  2. 2.An angle measures 130°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  3. 3.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  4. 4.An angle measures 65°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  5. 5.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  6. 6.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  7. 7.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  8. 8.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  9. 9.An angle measures 25°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  10. 10.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 70° and 90°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  13. 13.An angle measures 100°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  14. 14.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  15. 15.An angle measures 110°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  16. 16.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  17. 17.An angle measures 15°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  18. 18.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  21. 21.Two angles of a triangle are 45° and 115°. What is the third angle (in degrees)?
  22. 22.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  23. 23.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  27. 27.An angle measures 10°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  28. 28.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  29. 29.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 60° and 65°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 90° and 60°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 85° and 30°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. Obtuse
  3. 85
  4. Acute
  5. Right
  6. 60
  7. Acute
  8. 65
  9. Acute
  10. 150
  11. 20
  12. 80
  13. Obtuse
  14. 60
  15. Obtuse
  16. 30
  17. Acute
  18. 130
  19. 80
  20. 120
  21. 20
  22. Straight
  23. 50
  24. 35
  25. 70
  26. 30
  27. Acute
  28. Acute
  29. 100
  30. 35
  31. 40
  32. 95
  33. 30
  34. 70
  35. 10
  36. 220
  37. 55
  38. 120
  39. 30
  40. 65

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