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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 467 · 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 6 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  9. 9.An angle measures 145°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  10. 10.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  14. 14.An angle measures 20°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  15. 15.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  16. 16.Two angles of a triangle are 30° and 60°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 35° and 75°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 85° and 85°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  31. 31.Two angles of a triangle are 95° and 55°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  36. 36.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  37. 37.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?

Answer key

  1. 180
  2. 135
  3. 120
  4. 90
  5. 85
  6. 75
  7. 85
  8. 70
  9. Obtuse
  10. 145
  11. 20
  12. 85
  13. 30
  14. Acute
  15. Straight
  16. 90
  17. 70
  18. 90
  19. 15
  20. 115
  21. 130
  22. 10
  23. 130
  24. 180
  25. 90
  26. 150
  27. 105
  28. 95
  29. 80
  30. 60
  31. 30
  32. 120
  33. 65
  34. 100
  35. 180
  36. Acute
  37. 110
  38. 200
  39. 90
  40. 35

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