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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 831 · 40 sums
TalentJR

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 50° and 180°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 55° and 70°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 20° and 40°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  8. 8.An angle measures 125°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  9. 9.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  11. 11.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  13. 13.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 75° and 35°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 3 o'clock (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.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  21. 21.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 65° and 85°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  32. 32.An angle measures 85°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  33. 33.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 55° and 25°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 60° and 35°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?

Answer key

  1. 130
  2. 150
  3. 120
  4. 65
  5. 55
  6. 120
  7. 85
  8. Obtuse
  9. 180
  10. Straight
  11. 180
  12. Right
  13. 50
  14. 80
  15. 90
  16. 70
  17. 105
  18. 90
  19. 70
  20. Obtuse
  21. 160
  22. 80
  23. 30
  24. 15
  25. 150
  26. 30
  27. 80
  28. 85
  29. 230
  30. 30
  31. 30
  32. Acute
  33. 65
  34. 100
  35. 75
  36. 140
  37. 60
  38. 85
  39. 110
  40. 95

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