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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 713 · 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 50° and 170°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  5. 5.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 40° and 45°. What is the third angle (in degrees)?
  7. 7.An angle measures 140°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  8. 8.Two angles of a triangle are 65° and 20°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  15. 15.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  16. 16.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 60° and 75°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  27. 27.Two angles of a triangle are 90° and 70°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 85° and 75°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  38. 38.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  39. 39.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?

Answer key

  1. 140
  2. 145
  3. 70
  4. Right
  5. 120
  6. 95
  7. Obtuse
  8. 95
  9. 60
  10. 100
  11. 90
  12. 130
  13. 120
  14. 30
  15. Obtuse
  16. 150
  17. 70
  18. 80
  19. 60
  20. 45
  21. 120
  22. 40
  23. 135
  24. 75
  25. 100
  26. 30
  27. 20
  28. 160
  29. 150
  30. 75
  31. 5
  32. 20
  33. 125
  34. 140
  35. 55
  36. 140
  37. 210
  38. Straight
  39. 65
  40. 60

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