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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 816 · 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 8 o'clock (in degrees)?
  2. 2.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  3. 3.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  9. 9.An angle measures 125°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  10. 10.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  11. 11.An angle measures 25°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  12. 12.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  16. 16.An angle measures 55°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.An angle measures 105°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  19. 19.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 90° and 170°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 55° and 45°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  24. 24.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  25. 25.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  26. 26.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 65° and 105°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 50° and 35°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 60° and 25°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 20° and 140°. What is the third angle (in degrees)?

Answer key

  1. 120
  2. Right
  3. 25
  4. 140
  5. 150
  6. 30
  7. 20
  8. 60
  9. Obtuse
  10. 30
  11. Acute
  12. 130
  13. 80
  14. 125
  15. 25
  16. Acute
  17. 60
  18. Obtuse
  19. 60
  20. 100
  21. 160
  22. 80
  23. 190
  24. Straight
  25. Obtuse
  26. 35
  27. 10
  28. 55
  29. 120
  30. 95
  31. 95
  32. 155
  33. 200
  34. 180
  35. 35
  36. 85
  37. 90
  38. 120
  39. 60
  40. 20

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