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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 833 · 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 135°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  5. 5.Two angles of a triangle are 25° and 115°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  10. 10.An angle measures 50°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  11. 11.Two angles of a triangle are 35° and 50°. What is the third angle (in degrees)?
  12. 12.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  13. 13.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 70° and 50°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 40° and 125°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  30. 30.An angle measures 20°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  31. 31.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 45° and 90°. What is the third angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 55° and 95°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?

Answer key

  1. 45
  2. 130
  3. 90
  4. Right
  5. 40
  6. 45
  7. 95
  8. 125
  9. 140
  10. Acute
  11. 95
  12. Obtuse
  13. 200
  14. 130
  15. 155
  16. 10
  17. 170
  18. 135
  19. 130
  20. 40
  21. 60
  22. 5
  23. 100
  24. 20
  25. 15
  26. 120
  27. 25
  28. 50
  29. 60
  30. Acute
  31. 115
  32. 15
  33. 45
  34. 30
  35. 150
  36. 70
  37. 150
  38. 30
  39. 30
  40. 90

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