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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 54 · 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.An angle measures 55°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  2. 2.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  10. 10.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 30° and 80°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  20. 20.An angle measures 85°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  21. 21.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  26. 26.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  27. 27.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  30. 30.An angle measures 115°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  31. 31.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 50° and 90°. What is the third angle (in degrees)?

Answer key

  1. Acute
  2. 155
  3. 90
  4. 50
  5. 145
  6. 30
  7. 70
  8. 55
  9. Straight
  10. 50
  11. 70
  12. 190
  13. 90
  14. 5
  15. 90
  16. 20
  17. 20
  18. 130
  19. 70
  20. Acute
  21. 35
  22. 140
  23. 120
  24. 60
  25. 150
  26. Acute
  27. 60
  28. 60
  29. 160
  30. Obtuse
  31. 165
  32. 30
  33. 180
  34. 220
  35. 55
  36. 110
  37. 130
  38. 60
  39. 40
  40. 40

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