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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 429 · 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 8 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  3. 3.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  4. 4.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  8. 8.Two angles of a triangle are 70° and 70°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  12. 12.An angle measures 130°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  13. 13.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  15. 15.An angle measures 55°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  16. 16.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 20° and 85°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  32. 32.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  33. 33.Two angles of a triangle are 75° and 25°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 40° and 50°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 65° and 55°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?

Answer key

  1. 120
  2. 120
  3. Acute
  4. 70
  5. 150
  6. 105
  7. Straight
  8. 40
  9. 150
  10. 80
  11. 60
  12. Obtuse
  13. 60
  14. 120
  15. Acute
  16. 90
  17. 180
  18. 20
  19. 75
  20. 70
  21. 85
  22. 50
  23. 100
  24. 75
  25. 100
  26. 90
  27. 140
  28. 60
  29. 30
  30. 180
  31. 10
  32. Right
  33. 80
  34. 90
  35. 165
  36. 120
  37. 230
  38. 45
  39. 60
  40. 110

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