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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 237 · 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 135°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  2. 2.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  8. 8.An angle measures 15°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  9. 9.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 50° and 120°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 75° and 45°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 95° and 55°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  19. 19.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  20. 20.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 20° and 120°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 25° and 105°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 50° and 125°. What is the third angle (in degrees)?
  32. 32.An angle measures 125°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  33. 33.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  39. 39.An angle measures 175°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  40. 40.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?

Answer key

  1. Obtuse
  2. 150
  3. 55
  4. 165
  5. 30
  6. 220
  7. 130
  8. Acute
  9. 160
  10. 180
  11. 50
  12. 190
  13. 60
  14. 120
  15. 90
  16. 30
  17. 90
  18. 45
  19. Right
  20. 120
  21. 170
  22. 55
  23. 150
  24. 150
  25. 140
  26. 40
  27. 140
  28. 35
  29. 10
  30. 50
  31. 5
  32. Obtuse
  33. 15
  34. 75
  35. 90
  36. 65
  37. 170
  38. 120
  39. Obtuse
  40. 145

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