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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 406 · 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.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  4. 4.An angle measures 155°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  5. 5.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 75° and 50°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  10. 10.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  11. 11.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 30° and 30°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  20. 20.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  21. 21.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 65° and 65°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  25. 25.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  26. 26.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  33. 33.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  34. 34.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  35. 35.An angle measures 15°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  36. 36.Three angles meet at a point. Two of them are 60° and 150°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 40° and 100°. What is the third angle (in degrees)?

Answer key

  1. 70
  2. 60
  3. 15
  4. Obtuse
  5. 170
  6. 55
  7. 90
  8. 170
  9. 65
  10. Right
  11. 35
  12. 30
  13. 210
  14. 55
  15. 80
  16. 190
  17. 120
  18. 45
  19. 150
  20. Straight
  21. 155
  22. 50
  23. 230
  24. 160
  25. Obtuse
  26. 50
  27. 135
  28. 80
  29. 75
  30. 130
  31. 150
  32. 210
  33. Obtuse
  34. 110
  35. Acute
  36. 150
  37. 70
  38. 10
  39. 150
  40. 40

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