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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 640 · 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.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  5. 5.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  6. 6.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 35° and 130°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 45° and 65°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 50° and 90°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 130° and 80°. 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.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  22. 22.An angle measures 165°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  23. 23.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  25. 25.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  26. 26.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 45° and 130°. What is the third angle (in degrees)?
  29. 29.An angle measures 175°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  30. 30.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  31. 31.An angle measures 20°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  32. 32.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  38. 38.An angle measures 80°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  39. 39.Two angles of a triangle are 45° and 80°. What is the third angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 180
  3. 30
  4. 135
  5. Right
  6. 60
  7. 160
  8. 120
  9. 5
  10. 30
  11. 65
  12. 15
  13. 70
  14. 55
  15. 10
  16. 40
  17. 70
  18. 60
  19. 150
  20. 90
  21. 60
  22. Obtuse
  23. 80
  24. 25
  25. Obtuse
  26. 20
  27. 170
  28. 5
  29. Obtuse
  30. 60
  31. Acute
  32. 90
  33. 100
  34. 50
  35. 70
  36. 100
  37. 85
  38. Acute
  39. 55
  40. 80

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