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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 845 · 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.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  3. 3.An angle measures 25°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 95° and 75°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  8. 8.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  9. 9.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 70° and 105°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  17. 17.An angle measures 70°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  18. 18.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  19. 19.Two angles of a triangle are 35° and 140°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  21. 21.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  22. 22.Two angles of a triangle are 85° and 25°. What is the third angle (in degrees)?
  23. 23.An angle measures 35°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  24. 24.Two angles of a triangle are 35° and 110°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 50° and 110°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 40° and 100°. What is the third angle (in degrees)?
  30. 30.An angle measures 75°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  31. 31.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  32. 32.An angle measures 125°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  33. 33.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 25° and 80°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  40. 40.An angle measures 155°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse

Answer key

  1. Right
  2. 30
  3. Acute
  4. 55
  5. 10
  6. 35
  7. 150
  8. Obtuse
  9. 10
  10. 5
  11. 85
  12. 90
  13. 30
  14. 25
  15. 145
  16. 60
  17. Acute
  18. 90
  19. 5
  20. 120
  21. Straight
  22. 70
  23. Acute
  24. 35
  25. 100
  26. 70
  27. 20
  28. 30
  29. 40
  30. Acute
  31. 100
  32. Obtuse
  33. 60
  34. 75
  35. 90
  36. 125
  37. 105
  38. 110
  39. 55
  40. Obtuse

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