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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 322 · 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 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  2. 2.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  4. 4.An angle measures 70°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  5. 5.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  6. 6.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 75° and 20°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  18. 18.An angle measures 50°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  19. 19.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  20. 20.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  28. 28.An angle measures 175°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  29. 29.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 60° and 45°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  36. 36.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  37. 37.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 20° and 60°. What is the third angle (in degrees)?

Answer key

  1. Right
  2. 190
  3. 155
  4. Acute
  5. Straight
  6. 115
  7. 30
  8. 85
  9. 210
  10. 150
  11. 30
  12. 140
  13. 25
  14. 180
  15. 80
  16. 180
  17. 75
  18. Acute
  19. Acute
  20. 110
  21. 120
  22. 180
  23. 120
  24. 250
  25. 10
  26. 165
  27. 90
  28. Obtuse
  29. 160
  30. 15
  31. 115
  32. 30
  33. 50
  34. 75
  35. 110
  36. Acute
  37. 65
  38. 30
  39. 60
  40. 100

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