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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 998 · 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.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  2. 2.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  3. 3.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 30° and 45°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 70° and 90°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  14. 14.An angle measures 15°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  15. 15.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 140° and 140°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 35° and 110°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 60° and 110°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 80° and 45°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?

Answer key

  1. Right
  2. Straight
  3. 100
  4. 115
  5. 130
  6. 120
  7. 105
  8. 70
  9. 20
  10. 130
  11. 5
  12. 150
  13. 170
  14. Acute
  15. 110
  16. 90
  17. 30
  18. 90
  19. 210
  20. 60
  21. 170
  22. 65
  23. 80
  24. 45
  25. 30
  26. 100
  27. 35
  28. 150
  29. 140
  30. 10
  31. 130
  32. 90
  33. 155
  34. 75
  35. 150
  36. 80
  37. 85
  38. 55
  39. 60
  40. 165

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