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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 484 · 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 140° and 60°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  4. 4.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 50° and 105°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  18. 18.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  19. 19.Two angles of a triangle are 50° and 35°. 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.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 25° and 120°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 65° and 30°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  28. 28.An angle measures 15°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  29. 29.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 25° and 55°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  36. 36.An angle measures 20°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  37. 37.Two angles of a triangle are 85° and 45°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  40. 40.An angle measures 150°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse

Answer key

  1. 160
  2. 40
  3. Right
  4. 60
  5. 40
  6. 150
  7. 60
  8. 5
  9. 110
  10. 130
  11. 180
  12. 60
  13. 55
  14. 240
  15. 25
  16. 145
  17. 75
  18. Obtuse
  19. 95
  20. 30
  21. 15
  22. 15
  23. 45
  24. 85
  25. 35
  26. 85
  27. 180
  28. Acute
  29. 85
  30. 50
  31. 100
  32. 180
  33. 25
  34. 60
  35. 150
  36. Acute
  37. 50
  38. 70
  39. 120
  40. Obtuse

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