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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 568 · 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 60°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  8. 8.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  9. 9.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  11. 11.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  13. 13.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 30° and 60°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  20. 20.An angle measures 155°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  21. 21.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 25° and 125°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  24. 24.An angle measures 60°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  25. 25.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 20° and 60°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  31. 31.An angle measures 115°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  32. 32.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  36. 36.An angle measures 15°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  37. 37.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 35° and 135°. What is the third angle (in degrees)?

Answer key

  1. 120
  2. 120
  3. 150
  4. 75
  5. 60
  6. 15
  7. 220
  8. Acute
  9. 30
  10. Straight
  11. 120
  12. Right
  13. 85
  14. 90
  15. 150
  16. 210
  17. 190
  18. 90
  19. 55
  20. Obtuse
  21. 70
  22. 30
  23. 5
  24. Acute
  25. 80
  26. 80
  27. 100
  28. 80
  29. 135
  30. 240
  31. Obtuse
  32. 150
  33. 65
  34. 120
  35. 60
  36. Acute
  37. 90
  38. 85
  39. 180
  40. 10

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