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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 949 · 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 5 o'clock (in degrees)?
  2. 2.An angle measures 45°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  3. 3.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 90° and 60°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  9. 9.An angle measures 100°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  10. 10.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 170°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  24. 24.Two angles of a triangle are 30° and 80°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 75° and 90°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 40° and 75°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 9 o'clock (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 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  38. 38.An angle measures 25°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  39. 39.Two angles of a triangle are 50° and 100°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?

Answer key

  1. 150
  2. Acute
  3. 70
  4. 30
  5. 90
  6. 140
  7. 30
  8. 25
  9. Obtuse
  10. 100
  11. 5
  12. 75
  13. 15
  14. 240
  15. 60
  16. 110
  17. 120
  18. 145
  19. 150
  20. 75
  21. 130
  22. 160
  23. Straight
  24. 70
  25. 90
  26. 60
  27. 15
  28. 65
  29. 100
  30. 180
  31. 90
  32. 10
  33. 90
  34. 65
  35. 90
  36. 130
  37. Right
  38. Acute
  39. 30
  40. 120

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