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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 608 · 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 75°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  4. 4.Two angles of a triangle are 95° and 50°. What is the third angle (in degrees)?
  5. 5.An angle measures 105°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  6. 6.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  8. 8.Two angles of a triangle are 55° and 95°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (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.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 25° and 115°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 30° and 75°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 120° and 100°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 40° and 120°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 80° and 45°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 85° and 60°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?

Answer key

  1. 15
  2. 90
  3. Right
  4. 35
  5. Obtuse
  6. 85
  7. Straight
  8. 30
  9. 230
  10. 145
  11. 200
  12. 60
  13. 40
  14. 20
  15. 40
  16. 150
  17. 80
  18. 65
  19. 75
  20. 70
  21. 180
  22. 70
  23. 190
  24. 140
  25. 150
  26. 80
  27. 90
  28. 25
  29. 90
  30. 70
  31. 30
  32. 120
  33. 20
  34. 55
  35. 30
  36. 100
  37. 70
  38. 55
  39. 35
  40. 100

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