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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 958 · 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 10 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 70° and 90°. 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.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 50° and 80°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 65° and 55°. What is the third angle (in degrees)?
  9. 9.An angle measures 110°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  10. 10.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  16. 16.An angle measures 10°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  17. 17.Two angles of a triangle are 50° and 40°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  19. 19.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 25° and 110°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 11 o'clock (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 together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  27. 27.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  28. 28.Two angles of a triangle are 20° and 40°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 65° and 30°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 35° and 115°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 60° and 65°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  35. 35.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  36. 36.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 45° and 30°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. 200
  3. 40
  4. 95
  5. 30
  6. 80
  7. 50
  8. 60
  9. Obtuse
  10. Right
  11. 60
  12. 60
  13. 60
  14. 170
  15. 100
  16. Acute
  17. 90
  18. 150
  19. 110
  20. 45
  21. 30
  22. 90
  23. 105
  24. 40
  25. 20
  26. 160
  27. Obtuse
  28. 120
  29. 180
  30. 85
  31. 90
  32. 30
  33. 55
  34. 65
  35. Straight
  36. 5
  37. 180
  38. 65
  39. 200
  40. 105

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