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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 595 · 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 5 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  4. 4.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  5. 5.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  6. 6.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  7. 7.An angle measures 25°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  8. 8.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  9. 9.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  10. 10.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  12. 12.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  13. 13.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 75° and 55°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 25° and 35°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  19. 19.An angle measures 30°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  20. 20.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  28. 28.Two angles of a triangle are 95° and 35°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 20° and 115°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 20° and 85°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 120
  3. 120
  4. Acute
  5. Right
  6. 130
  7. Acute
  8. 250
  9. Acute
  10. 110
  11. 5
  12. Straight
  13. 150
  14. 130
  15. 50
  16. 200
  17. 120
  18. 10
  19. Acute
  20. 20
  21. 80
  22. 100
  23. 15
  24. 60
  25. 145
  26. 60
  27. 30
  28. 50
  29. 140
  30. 45
  31. 20
  32. 60
  33. 210
  34. 45
  35. 180
  36. 140
  37. 75
  38. 15
  39. 120
  40. 55

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