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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 925 · 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.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 20° and 130°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  9. 9.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 85° and 85°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  16. 16.An angle measures 40°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  17. 17.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  18. 18.An angle measures 100°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  19. 19.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  22. 22.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  23. 23.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  25. 25.An angle measures 75°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  26. 26.An angle measures 35°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  27. 27.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 70° and 120°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  33. 33.An angle measures 85°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  34. 34.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. 160
  3. 30
  4. 90
  5. 165
  6. 90
  7. 5
  8. 120
  9. Right
  10. 35
  11. 30
  12. 130
  13. 10
  14. 180
  15. 150
  16. Acute
  17. 160
  18. Obtuse
  19. 150
  20. 170
  21. 65
  22. Straight
  23. 80
  24. 60
  25. Acute
  26. Acute
  27. 155
  28. 130
  29. 190
  30. 170
  31. 25
  32. 110
  33. Acute
  34. 90
  35. 110
  36. 105
  37. 70
  38. 5
  39. 50
  40. 240

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