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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 739 · 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 30°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 45° and 125°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 20°. 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 together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 20° and 30°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  12. 12.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  13. 13.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 65° and 85°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  26. 26.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  27. 27.Three angles meet at a point. Two of them are 70° and 180°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 65° and 100°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  33. 33.An angle measures 175°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  34. 34.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 85° and 20°. What is the third angle (in degrees)?

Answer key

  1. 150
  2. 170
  3. 35
  4. 60
  5. 10
  6. 70
  7. 150
  8. 15
  9. 130
  10. 75
  11. 90
  12. Straight
  13. 140
  14. 60
  15. 60
  16. 30
  17. 65
  18. 180
  19. 30
  20. 135
  21. 70
  22. 110
  23. 200
  24. 110
  25. 20
  26. Right
  27. 110
  28. 35
  29. 25
  30. 15
  31. 90
  32. 100
  33. Obtuse
  34. 100
  35. 85
  36. 40
  37. 110
  38. 75
  39. 130
  40. 75

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