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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 208 · 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.An angle measures 40°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  3. 3.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 85° and 90°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 50° and 115°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  16. 16.An angle measures 30°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  17. 17.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  18. 18.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  19. 19.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 60° and 85°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 50° and 50°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  25. 25.An angle measures 35°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  26. 26.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  32. 32.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  33. 33.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 35°. What is the other 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 145°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 70° and 90°. What is the third angle (in degrees)?

Answer key

  1. 120
  2. Acute
  3. 45
  4. 240
  5. 160
  6. 5
  7. 50
  8. 150
  9. 30
  10. 145
  11. 15
  12. 90
  13. 60
  14. 160
  15. 120
  16. Acute
  17. 140
  18. Right
  19. 85
  20. 35
  21. 80
  22. 115
  23. 75
  24. 75
  25. Acute
  26. 170
  27. 15
  28. 15
  29. 200
  30. 110
  31. 130
  32. Straight
  33. 100
  34. 100
  35. 80
  36. 180
  37. 55
  38. 60
  39. 35
  40. 20

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