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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 992 · 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 70°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  2. 2.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 130°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 75° and 35°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 20° and 100°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  14. 14.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  15. 15.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  17. 17.An angle measures 30°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  18. 18.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 65° and 50°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  27. 27.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  28. 28.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 30° and 135°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  35. 35.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  36. 36.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  40. 40.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute

Answer key

  1. Acute
  2. 40
  3. 60
  4. 120
  5. 15
  6. 170
  7. 130
  8. 50
  9. 70
  10. 30
  11. 125
  12. 60
  13. 140
  14. Obtuse
  15. 80
  16. 60
  17. Acute
  18. 210
  19. 150
  20. 10
  21. 10
  22. 90
  23. 40
  24. 65
  25. 60
  26. 120
  27. Straight
  28. 95
  29. 15
  30. 110
  31. 25
  32. 30
  33. 55
  34. 100
  35. Acute
  36. 45
  37. 5
  38. 240
  39. 105
  40. Obtuse

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