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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 963 · 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.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.An angle measures 50°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  5. 5.Two angles of a triangle are 50° and 25°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  8. 8.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  11. 11.An angle measures 110°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  12. 12.Two angles of a triangle are 40° and 65°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 20°. 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.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 30° and 25°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  23. 23.An angle measures 80°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  24. 24.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  27. 27.An angle measures 145°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  28. 28.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 30° and 35°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  37. 37.An angle measures 30°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  38. 38.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  39. 39.An angle measures 75°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  40. 40.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?

Answer key

  1. 90
  2. 60
  3. Acute
  4. 120
  5. 105
  6. 120
  7. Straight
  8. 105
  9. 60
  10. 70
  11. Obtuse
  12. 75
  13. 160
  14. 25
  15. 15
  16. 45
  17. 130
  18. 125
  19. 45
  20. 30
  21. 5
  22. 30
  23. Acute
  24. 35
  25. 80
  26. 150
  27. Obtuse
  28. 140
  29. 15
  30. 95
  31. 45
  32. 200
  33. 110
  34. 115
  35. 20
  36. 65
  37. Acute
  38. 30
  39. Acute
  40. 55

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