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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 935 · 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.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  4. 4.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 70° and 30°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 30° and 55°. What is the third angle (in degrees)?
  9. 9.An angle measures 25°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  10. 10.Two angles of a triangle are 50° and 20°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  14. 14.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  15. 15.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  17. 17.An angle measures 15°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  18. 18.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  19. 19.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  20. 20.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  23. 23.An angle measures 95°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  24. 24.An angle measures 35°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  25. 25.Two angles of a triangle are 25° and 70°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 25°. 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.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  33. 33.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  34. 34.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  38. 38.An angle measures 125°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  39. 39.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  40. 40.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?

Answer key

  1. 75
  2. 30
  3. Obtuse
  4. 45
  5. 80
  6. 170
  7. 150
  8. 95
  9. Acute
  10. 110
  11. 180
  12. 260
  13. 140
  14. Right
  15. 60
  16. 105
  17. Acute
  18. 60
  19. Acute
  20. 45
  21. 145
  22. 180
  23. Obtuse
  24. Acute
  25. 85
  26. 65
  27. 150
  28. 65
  29. 120
  30. 220
  31. 90
  32. 110
  33. Straight
  34. 60
  35. 120
  36. 10
  37. 90
  38. Obtuse
  39. Acute
  40. 180

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