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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 471 · 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.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  4. 4.An angle measures 165°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  5. 5.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 90° and 210°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  20. 20.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  21. 21.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 85° and 70°. 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.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 85° and 80°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?

Answer key

  1. 150
  2. 25
  3. Straight
  4. Obtuse
  5. 230
  6. 5
  7. 85
  8. 30
  9. 75
  10. 60
  11. 20
  12. 65
  13. 120
  14. 55
  15. 140
  16. 120
  17. 90
  18. 80
  19. 150
  20. Right
  21. 180
  22. 65
  23. 25
  24. 45
  25. 10
  26. 150
  27. 70
  28. 155
  29. 30
  30. 100
  31. 200
  32. 70
  33. 15
  34. 35
  35. 50
  36. 95
  37. 45
  38. 90
  39. 65
  40. 190

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