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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 462 · 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 6 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  4. 4.Three angles meet at a point. Two of them are 70° and 60°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 65° and 55°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 45° and 120°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 70° and 80°. What is the third angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  24. 24.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 65° and 30°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  30. 30.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 75° and 75°. 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.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  37. 37.An angle measures 140°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  38. 38.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  39. 39.An angle measures 135°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  40. 40.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?

Answer key

  1. 180
  2. 60
  3. Right
  4. 230
  5. 150
  6. 60
  7. 60
  8. 190
  9. 70
  10. 80
  11. 30
  12. 210
  13. 140
  14. 65
  15. 15
  16. 10
  17. 15
  18. 120
  19. 90
  20. 50
  21. 150
  22. 30
  23. Straight
  24. 20
  25. 30
  26. 50
  27. 85
  28. 180
  29. 90
  30. 50
  31. 65
  32. 30
  33. 45
  34. 70
  35. 60
  36. 130
  37. Obtuse
  38. 120
  39. Obtuse
  40. 130

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