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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 722 · 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 70°. What is the other angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  3. 3.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 20° and 105°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 30° and 135°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 45° and 65°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  22. 22.An angle measures 80°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  23. 23.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 120° and 100°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 50° and 55°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  33. 33.An angle measures 170°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  34. 34.Two angles of a triangle are 45° and 30°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 30° and 130°. What is the third angle (in degrees)?
  36. 36.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  37. 37.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  40. 40.An angle measures 105°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse

Answer key

  1. 110
  2. Straight
  3. 75
  4. 5
  5. 10
  6. 35
  7. 55
  8. 15
  9. 120
  10. 85
  11. 60
  12. 60
  13. 165
  14. 55
  15. 70
  16. 170
  17. 70
  18. 10
  19. 105
  20. 80
  21. 150
  22. Acute
  23. 110
  24. 90
  25. 150
  26. 75
  27. 140
  28. 75
  29. 60
  30. 170
  31. 50
  32. 170
  33. Obtuse
  34. 105
  35. 20
  36. Right
  37. 150
  38. 25
  39. 65
  40. Obtuse

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