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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 302 · 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 4 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  4. 4.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 45° and 40°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  21. 21.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  22. 22.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 35° and 135°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 30° and 55°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 65° and 70°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 100° and 180°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 140° and 140°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?

Answer key

  1. 120
  2. 15
  3. Right
  4. 210
  5. 60
  6. 170
  7. 90
  8. 95
  9. 40
  10. 155
  11. 70
  12. 90
  13. 80
  14. 25
  15. 160
  16. 130
  17. 30
  18. 30
  19. 60
  20. 70
  21. Straight
  22. 40
  23. 150
  24. 10
  25. 170
  26. 75
  27. 95
  28. 55
  29. 45
  30. 75
  31. 15
  32. 80
  33. 45
  34. 5
  35. 100
  36. 55
  37. 65
  38. 90
  39. 80
  40. 90

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