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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 404 · 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.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 45° and 110°. What is the third angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  9. 9.Two angles of a triangle are 75° and 25°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  12. 12.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  13. 13.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 50° and 50°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 140° and 90°. What is the third 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.An angle measures 35°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  26. 26.Two angles of a triangle are 25° and 55°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  29. 29.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  30. 30.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  33. 33.An angle measures 145°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  34. 34.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  37. 37.An angle measures 150°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  38. 38.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?

Answer key

  1. 160
  2. 50
  3. 90
  4. 90
  5. 160
  6. 150
  7. 25
  8. Straight
  9. 80
  10. 130
  11. 160
  12. Obtuse
  13. 65
  14. 75
  15. 160
  16. 15
  17. 80
  18. 170
  19. 40
  20. 120
  21. 70
  22. 130
  23. 30
  24. 60
  25. Acute
  26. 100
  27. 70
  28. 115
  29. Acute
  30. 60
  31. 65
  32. 30
  33. Obtuse
  34. 120
  35. 150
  36. 130
  37. Obtuse
  38. 85
  39. 145
  40. 180

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