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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 627 · 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.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  3. 3.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  4. 4.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  5. 5.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  7. 7.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  11. 11.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  12. 12.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  13. 13.Two angles of a triangle are 20° and 95°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  17. 17.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  18. 18.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 85° and 85°. What is the third angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  24. 24.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 60° and 110°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 100° and 70°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  34. 34.An angle measures 125°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  35. 35.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  38. 38.Two angles of a triangle are 75° and 35°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  40. 40.An angle measures 160°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute

Answer key

  1. 40
  2. 15
  3. Acute
  4. Obtuse
  5. 50
  6. Right
  7. 180
  8. 150
  9. 155
  10. 70
  11. Obtuse
  12. 30
  13. 65
  14. 15
  15. 165
  16. 210
  17. Acute
  18. 65
  19. 50
  20. 240
  21. 140
  22. 10
  23. Straight
  24. 85
  25. 10
  26. 60
  27. 75
  28. 120
  29. 90
  30. 10
  31. 85
  32. 110
  33. 80
  34. Obtuse
  35. 90
  36. 25
  37. 90
  38. 70
  39. 35
  40. Obtuse

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