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Class 5 Maths Worksheet: Angles

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

Answer key

  1. 120
  2. 30
  3. 150
  4. 90
  5. Right
  6. Straight
  7. 90
  8. 60
  9. 90
  10. 25
  11. 160
  12. 130
  13. 45
  14. 200
  15. 70
  16. 65
  17. 50
  18. 100
  19. 35
  20. 125
  21. 65
  22. Obtuse
  23. 60
  24. 155
  25. 5
  26. 110
  27. 35
  28. Obtuse
  29. 10
  30. 70
  31. 90
  32. 60
  33. 85
  34. 30
  35. 55
  36. 20
  37. Acute
  38. 140
  39. 75
  40. 180

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