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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 945 · 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 11 o'clock (in degrees)?
  2. 2.Two angles of a triangle are 70° and 35°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  4. 4.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  7. 7.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  8. 8.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 50° and 60°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 35° and 120°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  20. 20.An angle measures 70°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  21. 21.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 60° and 40°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 90° and 70°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  25. 25.An angle measures 30°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  26. 26.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 65° and 25°. What is the third angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 25° and 50°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 20° and 20°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 75
  3. 10
  4. Acute
  5. 150
  6. Straight
  7. Right
  8. 110
  9. 210
  10. 130
  11. 90
  12. 30
  13. 70
  14. 80
  15. 180
  16. 80
  17. 85
  18. 25
  19. 110
  20. Acute
  21. 60
  22. 80
  23. 20
  24. 120
  25. Acute
  26. 170
  27. 95
  28. 85
  29. 90
  30. 25
  31. 15
  32. 50
  33. 105
  34. 250
  35. 150
  36. 140
  37. 65
  38. 20
  39. 180
  40. 15

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