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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 835 · 40 sums
TalentJR

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 15°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  3. 3.An angle measures 65°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  4. 4.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  5. 5.An angle measures 85°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  6. 6.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 120°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 70° and 180°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  16. 16.An angle measures 60°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  17. 17.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  20. 20.An angle measures 40°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  21. 21.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  22. 22.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  23. 23.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  24. 24.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  25. 25.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 85° and 45°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 25° and 30°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?

Answer key

  1. 165
  2. 100
  3. Acute
  4. 40
  5. Acute
  6. 150
  7. 30
  8. 130
  9. 190
  10. 135
  11. 180
  12. 110
  13. 30
  14. 90
  15. 120
  16. Acute
  17. 90
  18. 65
  19. 75
  20. Acute
  21. 160
  22. Straight
  23. 85
  24. Right
  25. 220
  26. 155
  27. 140
  28. 110
  29. 40
  30. 150
  31. 120
  32. 30
  33. 140
  34. 120
  35. 100
  36. 30
  37. 150
  38. 50
  39. 125
  40. 60

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