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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 986 · 40 sums
TalentJR

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 5 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  3. 3.Two angles of a triangle are 70° and 60°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 70° and 80°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  6. 6.An angle measures 165°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  7. 7.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  11. 11.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 65° and 65°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 50° and 100°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  20. 20.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  21. 21.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  28. 28.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 135
  3. 50
  4. 30
  5. 40
  6. Obtuse
  7. 35
  8. 150
  9. 70
  10. Straight
  11. 15
  12. 100
  13. 120
  14. 155
  15. 45
  16. 50
  17. 65
  18. 30
  19. 55
  20. Right
  21. 60
  22. 5
  23. 80
  24. 180
  25. 35
  26. 160
  27. 60
  28. 40
  29. 60
  30. 60
  31. 85
  32. 35
  33. 60
  34. 105
  35. 20
  36. 60
  37. 75
  38. 115
  39. 100
  40. 45

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