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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 321 · 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.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  2. 2.An angle measures 110°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  3. 3.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  5. 5.An angle measures 75°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  6. 6.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  7. 7.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  8. 8.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  9. 9.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 60° and 25°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 80° and 120°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  28. 28.An angle measures 80°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  29. 29.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 45° and 100°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?

Answer key

  1. 5
  2. Obtuse
  3. 240
  4. 35
  5. Acute
  6. Straight
  7. 120
  8. Right
  9. 30
  10. 30
  11. 95
  12. 70
  13. 75
  14. 60
  15. 120
  16. 125
  17. 10
  18. 170
  19. 150
  20. 90
  21. 160
  22. 135
  23. 210
  24. 250
  25. 110
  26. 70
  27. 210
  28. Acute
  29. 80
  30. 35
  31. 85
  32. 70
  33. 60
  34. 200
  35. 30
  36. 60
  37. 130
  38. 150
  39. 50
  40. 10

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