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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 88 · 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 50° and 240°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 80° and 190°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 65° and 70°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 20° and 85°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 70° and 65°. What is the third angle (in degrees)?
  18. 18.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  19. 19.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 80° and 85°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  23. 23.Two angles of a triangle are 20° and 70°. What is the third angle (in degrees)?
  24. 24.An angle measures 55°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  25. 25.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  27. 27.An angle measures 80°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  28. 28.Two angles of a triangle are 20° and 80°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 20° and 140°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  38. 38.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  39. 39.What is the smaller angle between the hands of a clock at 1 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. 70
  2. 60
  3. 40
  4. 5
  5. 90
  6. 65
  7. 45
  8. 150
  9. 140
  10. 60
  11. 80
  12. 155
  13. 110
  14. 110
  15. 75
  16. 70
  17. 45
  18. Obtuse
  19. 55
  20. 15
  21. 85
  22. 90
  23. 90
  24. Acute
  25. 90
  26. 90
  27. Acute
  28. 80
  29. 150
  30. 10
  31. 20
  32. 130
  33. 60
  34. 190
  35. 15
  36. 20
  37. 55
  38. Right
  39. 30
  40. 105

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