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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 57 · 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 95°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  8. 8.An angle measures 80°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  9. 9.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 30° and 40°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 20° and 20°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 45° and 50°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  18. 18.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  19. 19.An angle measures 160°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  20. 20.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  24. 24.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  31. 31.Two angles of a triangle are 45° and 115°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  35. 35.An angle measures 125°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  36. 36.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?

Answer key

  1. Obtuse
  2. 30
  3. 35
  4. 60
  5. 140
  6. 200
  7. 40
  8. Acute
  9. 40
  10. 110
  11. 55
  12. 140
  13. 130
  14. 85
  15. 25
  16. 170
  17. Right
  18. 65
  19. Obtuse
  20. 35
  21. 60
  22. 10
  23. Straight
  24. 20
  25. 85
  26. 105
  27. 155
  28. 90
  29. 50
  30. 120
  31. 20
  32. 150
  33. 40
  34. 90
  35. Obtuse
  36. 20
  37. 60
  38. 60
  39. 145
  40. 75

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