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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 745 · 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.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  2. 2.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 100° and 70°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  7. 7.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  8. 8.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  9. 9.An angle measures 165°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 50° and 80°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  15. 15.An angle measures 15°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  16. 16.Two angles of a triangle are 95° and 35°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 40° and 125°. What is the third angle (in degrees)?
  18. 18.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  21. 21.An angle measures 65°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  22. 22.Three angles meet at a point. Two of them are 90° and 150°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  30. 30.An angle measures 160°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  31. 31.Two angles of a triangle are 20° and 80°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 75° and 55°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 40°. What is the other 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.An angle measures 25°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  40. 40.Two angles of a triangle are 20° and 75°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 70
  3. 70
  4. 10
  5. 180
  6. 30
  7. Obtuse
  8. Right
  9. Obtuse
  10. 10
  11. 50
  12. 50
  13. 120
  14. 180
  15. Acute
  16. 50
  17. 15
  18. Straight
  19. 60
  20. 145
  21. Acute
  22. 120
  23. 230
  24. 25
  25. 120
  26. 90
  27. 40
  28. 165
  29. 150
  30. Obtuse
  31. 80
  32. 200
  33. 70
  34. 170
  35. 30
  36. 50
  37. 140
  38. 75
  39. Acute
  40. 85

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