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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 174 · 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.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 60° and 50°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 130°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  17. 17.An angle measures 165°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  18. 18.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 40° and 110°. What is the third angle (in degrees)?
  23. 23.An angle measures 170°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  24. 24.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  25. 25.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  29. 29.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  30. 30.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  31. 31.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  32. 32.An angle measures 75°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  33. 33.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 70° and 55°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  38. 38.An angle measures 25°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  39. 39.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  40. 40.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?

Answer key

  1. 85
  2. 45
  3. 40
  4. 70
  5. 70
  6. 170
  7. 30
  8. 15
  9. 80
  10. 20
  11. 120
  12. 80
  13. 120
  14. 60
  15. 230
  16. 75
  17. Obtuse
  18. 70
  19. 60
  20. 60
  21. 15
  22. 30
  23. Obtuse
  24. Obtuse
  25. 155
  26. 150
  27. 70
  28. 135
  29. Acute
  30. Right
  31. 90
  32. Acute
  33. 160
  34. 55
  35. 180
  36. 180
  37. 65
  38. Acute
  39. Obtuse
  40. 65

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