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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 411 · 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.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  10. 10.An angle measures 95°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  11. 11.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  13. 13.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  14. 14.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 30° and 35°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  26. 26.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  27. 27.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 100° and 40°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 35° and 95°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 100° and 45°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?

Answer key

  1. Obtuse
  2. 120
  3. 25
  4. 45
  5. 30
  6. 10
  7. 60
  8. 70
  9. 20
  10. Obtuse
  11. 115
  12. 35
  13. Straight
  14. 60
  15. 150
  16. 30
  17. 125
  18. 95
  19. 115
  20. 150
  21. 90
  22. 110
  23. 200
  24. 30
  25. 30
  26. Right
  27. 170
  28. 180
  29. 40
  30. 70
  31. 150
  32. 50
  33. 90
  34. 50
  35. 60
  36. 35
  37. 40
  38. 45
  39. 50
  40. 45

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