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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 675 · 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 40°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  4. 4.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  5. 5.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  6. 6.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 30° and 30°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 80° and 50°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (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 20°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  17. 17.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  33. 33.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  34. 34.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 100° and 75°. What is the third angle (in degrees)?
  40. 40.An angle measures 130°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right

Answer key

  1. 140
  2. 150
  3. Straight
  4. 150
  5. Obtuse
  6. 50
  7. 120
  8. 55
  9. 20
  10. 30
  11. 60
  12. 180
  13. 50
  14. 160
  15. 120
  16. Acute
  17. 60
  18. 20
  19. 30
  20. 70
  21. 70
  22. 70
  23. 60
  24. 190
  25. 35
  26. 10
  27. 110
  28. 75
  29. 15
  30. 120
  31. 120
  32. 85
  33. Acute
  34. 60
  35. 110
  36. 145
  37. 110
  38. 30
  39. 5
  40. Obtuse

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