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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 556 · 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 85°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  4. 4.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 55° and 65°. What is the third angle (in degrees)?
  11. 11.Two angles of a triangle are 40° and 105°. What is the third angle (in degrees)?
  12. 12.An angle measures 65°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  13. 13.Two angles of a triangle are 40° and 115°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  18. 18.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  19. 19.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 30° and 90°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 100° and 45°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 180°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  30. 30.An angle measures 105°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  31. 31.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 30° and 35°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?

Answer key

  1. 95
  2. 5
  3. Right
  4. 15
  5. 150
  6. 75
  7. 20
  8. 80
  9. 15
  10. 60
  11. 35
  12. Acute
  13. 25
  14. 80
  15. 40
  16. 100
  17. 130
  18. Straight
  19. 60
  20. 60
  21. 130
  22. 140
  23. 65
  24. 35
  25. 70
  26. 80
  27. 55
  28. 5
  29. 30
  30. Obtuse
  31. 260
  32. 150
  33. 30
  34. 240
  35. 230
  36. 110
  37. 150
  38. 115
  39. 40
  40. 60

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