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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 179 · 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 55°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 70° and 160°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 20° and 115°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  18. 18.An angle measures 175°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  19. 19.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  20. 20.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  22. 22.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  23. 23.An angle measures 25°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  24. 24.Two angles of a triangle are 30° and 45°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 20° and 20°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 85° and 90°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  37. 37.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  38. 38.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?

Answer key

  1. 125
  2. 90
  3. 75
  4. 30
  5. 130
  6. 60
  7. 90
  8. 65
  9. 25
  10. 130
  11. 90
  12. 135
  13. 120
  14. 10
  15. 45
  16. 45
  17. 150
  18. Obtuse
  19. Straight
  20. 15
  21. 80
  22. Right
  23. Acute
  24. 105
  25. 140
  26. 40
  27. 140
  28. 20
  29. 120
  30. 150
  31. 5
  32. 200
  33. 110
  34. 140
  35. 155
  36. 5
  37. Acute
  38. 25
  39. 60
  40. 105

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