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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 921 · 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.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  2. 2.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  3. 3.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 120° and 100°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  11. 11.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  12. 12.An angle measures 55°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  13. 13.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 30° and 130°. 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.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  22. 22.An angle measures 150°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  23. 23.Two angles of a triangle are 50° and 95°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 35° and 85°. What is the third angle (in degrees)?
  27. 27.An angle measures 160°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  28. 28.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  33. 33.An angle measures 25°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  34. 34.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  36. 36.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  37. 37.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  38. 38.An angle measures 60°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  39. 39.An angle measures 75°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  40. 40.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?

Answer key

  1. 55
  2. Right
  3. 65
  4. 80
  5. 5
  6. 45
  7. 130
  8. 135
  9. 140
  10. 30
  11. Straight
  12. Acute
  13. 60
  14. 120
  15. 60
  16. 20
  17. 90
  18. 60
  19. 115
  20. 110
  21. 50
  22. Obtuse
  23. 35
  24. 75
  25. 120
  26. 60
  27. Obtuse
  28. 170
  29. 75
  30. 250
  31. 70
  32. 40
  33. Acute
  34. 60
  35. 145
  36. Obtuse
  37. 30
  38. Acute
  39. Acute
  40. 80

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