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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 834 · 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 35°. What is the other angle (in degrees)?
  2. 2.An angle measures 75°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  3. 3.An angle measures 95°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  4. 4.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 35° and 50°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 25° and 30°. What is the third angle (in degrees)?
  9. 9.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  10. 10.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 70° and 50°. What is the third angle (in degrees)?
  21. 21.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  22. 22.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 20° and 20°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  37. 37.An angle measures 165°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  38. 38.An angle measures 45°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  39. 39.Three angles meet at a point. Two of them are 60° and 60°. 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. 145
  2. Acute
  3. Obtuse
  4. 105
  5. 80
  6. 30
  7. 95
  8. 125
  9. Right
  10. 150
  11. 65
  12. 120
  13. 90
  14. 35
  15. 150
  16. 135
  17. 55
  18. 125
  19. 70
  20. 60
  21. Straight
  22. 60
  23. 85
  24. 45
  25. 100
  26. 160
  27. 20
  28. 70
  29. 80
  30. 60
  31. 10
  32. 150
  33. 180
  34. 140
  35. 35
  36. 75
  37. Obtuse
  38. Acute
  39. 240
  40. 60

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