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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 272 · 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 60° and 120°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  6. 6.An angle measures 40°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  7. 7.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  8. 8.Two angles of a triangle are 40° and 50°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  24. 24.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  30. 30.An angle measures 80°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  31. 31.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  32. 32.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 130° and 60°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 150°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 80° and 25°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 85° and 25°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 30° and 80°. What is the third angle (in degrees)?

Answer key

  1. 180
  2. 30
  3. 130
  4. 45
  5. 70
  6. Acute
  7. Right
  8. 90
  9. 150
  10. 100
  11. 100
  12. 90
  13. 60
  14. 90
  15. 160
  16. 130
  17. 60
  18. 50
  19. 30
  20. 65
  21. 120
  22. 120
  23. Straight
  24. 100
  25. 75
  26. 90
  27. 85
  28. 15
  29. 200
  30. Acute
  31. Obtuse
  32. 85
  33. 170
  34. 95
  35. 150
  36. 180
  37. 145
  38. 75
  39. 70
  40. 70

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