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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 2 · 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 10 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  5. 5.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  6. 6.An angle measures 70°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  7. 7.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  8. 8.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  9. 9.An angle measures 100°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  10. 10.Three angles meet at a point. Two of them are 60° and 140°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 40° and 35°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  29. 29.An angle measures 160°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  30. 30.An angle measures 45°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  31. 31.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 50° and 95°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 70° and 75°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 65° and 65°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. 210
  3. 40
  4. 95
  5. Right
  6. Acute
  7. Acute
  8. 55
  9. Obtuse
  10. 160
  11. 75
  12. 180
  13. 130
  14. 30
  15. 5
  16. 75
  17. 60
  18. 120
  19. 130
  20. 180
  21. 105
  22. 140
  23. 30
  24. 60
  25. 90
  26. 125
  27. 230
  28. 30
  29. Obtuse
  30. Acute
  31. 25
  32. 90
  33. 35
  34. 45
  35. 140
  36. 35
  37. 50
  38. 70
  39. 100
  40. 70

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