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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 195 · 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 50°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  2. 2.Two angles of a triangle are 35° and 25°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  13. 13.Two angles of a triangle are 90° and 60°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  17. 17.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  18. 18.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 25° and 75°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 40° and 40°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 100° and 55°. 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.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 35° and 95°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  35. 35.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  36. 36.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?

Answer key

  1. Acute
  2. 120
  3. 150
  4. 160
  5. 120
  6. 230
  7. 50
  8. 85
  9. 45
  10. 60
  11. 40
  12. Right
  13. 30
  14. 10
  15. 90
  16. 60
  17. Acute
  18. 85
  19. 65
  20. 35
  21. 80
  22. 75
  23. 80
  24. 50
  25. 80
  26. 100
  27. 90
  28. 150
  29. 25
  30. 25
  31. 30
  32. 50
  33. 30
  34. 200
  35. Straight
  36. 90
  37. 150
  38. 75
  39. 140
  40. 15

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