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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 544 · 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) Acute (b) Straight (c) Right
  2. 2.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  3. 3.An angle measures 10°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  4. 4.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 25° and 85°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  14. 14.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  15. 15.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  16. 16.An angle measures 95°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  17. 17.Two angles of a triangle are 45° and 25°. What is the third 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.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  21. 21.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  22. 22.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 60° and 110°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 50° and 70°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  30. 30.An angle measures 50°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  31. 31.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 35° and 110°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  34. 34.An angle measures 65°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  35. 35.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 30° and 100°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?

Answer key

  1. Acute
  2. 140
  3. Acute
  4. 30
  5. 140
  6. 25
  7. 150
  8. 70
  9. 90
  10. 105
  11. 60
  12. 200
  13. 35
  14. Straight
  15. 80
  16. Obtuse
  17. 110
  18. 130
  19. 150
  20. 120
  21. Right
  22. 15
  23. 10
  24. 40
  25. 60
  26. 90
  27. 10
  28. 115
  29. 150
  30. Acute
  31. 70
  32. 35
  33. 95
  34. Acute
  35. 150
  36. 240
  37. 140
  38. 55
  39. 50
  40. 70

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