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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 418 · 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.An angle measures 85°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  2. 2.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  3. 3.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  5. 5.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 80° and 55°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 85° and 45°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 170°. 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.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 70° and 150°. 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.An angle measures 80°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  19. 19.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  22. 22.An angle measures 140°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  23. 23.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 120° and 160°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  27. 27.An angle measures 50°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  28. 28.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 50° and 60°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 55° and 35°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (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.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?

Answer key

  1. Acute
  2. Straight
  3. 155
  4. Right
  5. 120
  6. 20
  7. 45
  8. 85
  9. 5
  10. 90
  11. 50
  12. 130
  13. 40
  14. 30
  15. 140
  16. 140
  17. 65
  18. Acute
  19. 180
  20. 145
  21. 30
  22. Obtuse
  23. 125
  24. 80
  25. 50
  26. 230
  27. Acute
  28. 35
  29. 80
  30. 70
  31. 90
  32. 60
  33. 40
  34. 45
  35. 30
  36. 15
  37. 120
  38. 60
  39. 60
  40. 30

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