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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 165 · 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 120°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  5. 5.An angle measures 80°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  6. 6.An angle measures 165°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  7. 7.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 90° and 170°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  11. 11.Two angles of a triangle are 30° and 35°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 45° and 30°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  19. 19.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  20. 20.A right angle is split into two angles. One of them is 15°. What is the other angle (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.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  23. 23.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  25. 25.An angle measures 15°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  26. 26.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 80° and 130°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  29. 29.An angle measures 120°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  30. 30.Two angles of a triangle are 50° and 80°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 30° and 90°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 80° and 75°. What is the third angle (in degrees)?
  33. 33.An angle measures 10°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  34. 34.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 95° and 40°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 50° and 65°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?

Answer key

  1. 60
  2. 90
  3. 135
  4. 65
  5. Acute
  6. Obtuse
  7. 20
  8. 85
  9. 100
  10. 210
  11. 115
  12. 105
  13. 180
  14. 90
  15. 70
  16. 150
  17. 150
  18. 110
  19. Right
  20. 75
  21. 5
  22. Acute
  23. 95
  24. 30
  25. Acute
  26. 15
  27. 150
  28. 115
  29. Obtuse
  30. 50
  31. 60
  32. 25
  33. Acute
  34. 35
  35. 60
  36. 45
  37. 65
  38. 40
  39. 60
  40. 55

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