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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 69 · 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.Three angles meet at a point. Two of them are 80° and 120°. What is the third angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  3. 3.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.Two angles of a triangle are 30° and 130°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 70° and 45°. What is the third angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  13. 13.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 25° and 60°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  22. 22.An angle measures 75°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  23. 23.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  24. 24.An angle measures 30°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  25. 25.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  30. 30.Two angles of a triangle are 35° and 40°. 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.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 70° and 50°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  35. 35.An angle measures 35°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  36. 36.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?

Answer key

  1. 160
  2. Straight
  3. 100
  4. 30
  5. 180
  6. 20
  7. 145
  8. 90
  9. 10
  10. 150
  11. 65
  12. Right
  13. 20
  14. 95
  15. 75
  16. 25
  17. 80
  18. 80
  19. 85
  20. 15
  21. 35
  22. Acute
  23. 20
  24. Acute
  25. 140
  26. 70
  27. 20
  28. 20
  29. 60
  30. 105
  31. 90
  32. 55
  33. 60
  34. 60
  35. Acute
  36. 70
  37. 75
  38. 115
  39. 120
  40. 110

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