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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 22 · 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.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 120° and 160°. What is the third angle (in degrees)?
  5. 5.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  6. 6.Two angles of a triangle are 70° and 100°. 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 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  9. 9.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 70° and 55°. What is the third angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  24. 24.An angle measures 45°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  25. 25.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 35° and 60°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?

Answer key

  1. 5
  2. 170
  3. 90
  4. 80
  5. Straight
  6. 10
  7. 40
  8. Right
  9. 95
  10. 115
  11. 90
  12. 85
  13. 40
  14. 60
  15. 110
  16. 50
  17. 150
  18. 130
  19. 160
  20. 15
  21. 55
  22. 60
  23. 150
  24. Acute
  25. 60
  26. 130
  27. 120
  28. 45
  29. 145
  30. 80
  31. 165
  32. 10
  33. 25
  34. 45
  35. 180
  36. 150
  37. 130
  38. 130
  39. 85
  40. 80

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