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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 286 · 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 7 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 70° and 90°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  8. 8.An angle measures 135°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  9. 9.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  13. 13.An angle measures 115°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  14. 14.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 70° and 60°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 35° and 75°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 20° and 135°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  28. 28.An angle measures 175°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  29. 29.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  30. 30.An angle measures 15°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  31. 31.An angle measures 45°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  32. 32.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  34. 34.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  35. 35.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  36. 36.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  38. 38.An angle measures 25°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  39. 39.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 70
  3. 30
  4. 35
  5. 20
  6. 60
  7. 65
  8. Obtuse
  9. 155
  10. 125
  11. 10
  12. 120
  13. Obtuse
  14. 105
  15. 80
  16. 230
  17. 85
  18. 70
  19. 25
  20. 90
  21. 60
  22. 80
  23. 90
  24. 180
  25. 220
  26. 120
  27. 90
  28. Obtuse
  29. Straight
  30. Acute
  31. Acute
  32. 130
  33. 120
  34. Obtuse
  35. Acute
  36. 30
  37. 95
  38. Acute
  39. 85
  40. 15

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