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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 265 · 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 110° and 110°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  4. 4.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  5. 5.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  7. 7.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  8. 8.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 65° and 75°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 60° and 85°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 30° and 30°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 80° and 50°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  24. 24.Two angles of a triangle are 40° and 85°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  28. 28.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  29. 29.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 45° and 30°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  34. 34.An angle measures 125°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  35. 35.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  37. 37.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  38. 38.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 85° and 60°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?

Answer key

  1. 140
  2. 80
  3. 75
  4. Obtuse
  5. 30
  6. 60
  7. Obtuse
  8. 60
  9. 150
  10. 10
  11. 50
  12. 90
  13. 150
  14. 40
  15. 35
  16. 40
  17. 120
  18. 30
  19. 150
  20. 50
  21. 150
  22. 110
  23. Straight
  24. 55
  25. 85
  26. 180
  27. 180
  28. Acute
  29. 65
  30. 70
  31. 30
  32. 105
  33. 80
  34. Obtuse
  35. 20
  36. 110
  37. Obtuse
  38. 90
  39. 35
  40. 120

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