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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 134 · 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.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  5. 5.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  6. 6.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  7. 7.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  8. 8.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  11. 11.An angle measures 30°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  12. 12.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 20° and 45°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 95° and 55°. What is the third angle (in degrees)?
  17. 17.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  18. 18.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  20. 20.An angle measures 15°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  21. 21.An angle measures 135°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  22. 22.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  23. 23.An angle measures 80°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  24. 24.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  25. 25.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  26. 26.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 35° and 65°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 35° and 140°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 85° and 25°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 35° and 120°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 45° and 80°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?

Answer key

  1. 90
  2. 120
  3. Straight
  4. 60
  5. Obtuse
  6. 30
  7. Right
  8. 180
  9. 150
  10. 200
  11. Acute
  12. 150
  13. 120
  14. 70
  15. 115
  16. 30
  17. Acute
  18. 160
  19. 5
  20. Acute
  21. Obtuse
  22. 30
  23. Acute
  24. 145
  25. Acute
  26. 120
  27. 80
  28. 170
  29. 5
  30. 140
  31. 70
  32. 80
  33. 20
  34. 70
  35. 25
  36. 25
  37. 40
  38. 60
  39. 55
  40. 75

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