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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 217 · 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.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 45° and 60°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  11. 11.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  12. 12.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  15. 15.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  16. 16.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  19. 19.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  20. 20.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  21. 21.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  24. 24.An angle measures 120°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  25. 25.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 85° and 45°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 45° and 125°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 50° and 70°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 20° and 65°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  38. 38.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  39. 39.Two angles of a triangle are 70° and 30°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 30° and 115°. What is the third angle (in degrees)?

Answer key

  1. 150
  2. 150
  3. 75
  4. 75
  5. 60
  6. 30
  7. 90
  8. 190
  9. 85
  10. 45
  11. Right
  12. 150
  13. 75
  14. 110
  15. Acute
  16. 85
  17. 90
  18. 60
  19. Straight
  20. Obtuse
  21. 160
  22. 140
  23. 120
  24. Obtuse
  25. 130
  26. 25
  27. 50
  28. 120
  29. 170
  30. 95
  31. 145
  32. 10
  33. 240
  34. 60
  35. 165
  36. 95
  37. 135
  38. Obtuse
  39. 80
  40. 35

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