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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 514 · 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.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  3. 3.An angle measures 40°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  4. 4.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  11. 11.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  12. 12.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 45° and 80°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  17. 17.An angle measures 75°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  18. 18.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  21. 21.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  22. 22.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  24. 24.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 80° and 190°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 50° and 105°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 40° and 115°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?

Answer key

  1. 55
  2. 30
  3. Acute
  4. 135
  5. 170
  6. 160
  7. 210
  8. 90
  9. 150
  10. 150
  11. Right
  12. 60
  13. 10
  14. 90
  15. 55
  16. 90
  17. Acute
  18. 180
  19. 10
  20. 150
  21. Acute
  22. 5
  23. Straight
  24. 90
  25. 5
  26. 200
  27. 30
  28. 20
  29. 150
  30. 90
  31. 70
  32. 25
  33. 170
  34. 85
  35. 15
  36. 120
  37. 90
  38. 100
  39. 25
  40. 250

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