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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 501 · 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 of a triangle are 95° and 35°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  7. 7.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.Two angles of a triangle are 90° and 75°. What is the third angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 25° and 80°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  20. 20.An angle measures 65°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  21. 21.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  22. 22.An angle measures 135°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  23. 23.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  29. 29.An angle measures 75°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  30. 30.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 45° and 130°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?

Answer key

  1. 50
  2. 30
  3. 90
  4. 65
  5. 40
  6. Right
  7. 85
  8. 150
  9. 15
  10. Straight
  11. 20
  12. 10
  13. 75
  14. 60
  15. 5
  16. 160
  17. 90
  18. 150
  19. 60
  20. Acute
  21. 140
  22. Obtuse
  23. 120
  24. 120
  25. 140
  26. 170
  27. 170
  28. 60
  29. Acute
  30. 55
  31. 210
  32. 45
  33. 70
  34. 70
  35. 170
  36. 5
  37. 160
  38. 45
  39. 125
  40. 150

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