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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 788 · 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 10°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  5. 5.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  6. 6.An angle measures 20°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  7. 7.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  10. 10.Two angles of a triangle are 20° and 20°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 20° and 40°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 55° and 20°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  20. 20.An angle measures 10°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  21. 21.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  23. 23.An angle measures 55°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  24. 24.Two angles of a triangle are 60° and 85°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 100° and 180°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  37. 37.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  38. 38.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 80° and 75°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?

Answer key

  1. 80
  2. 70
  3. 135
  4. 110
  5. Straight
  6. Acute
  7. 60
  8. 15
  9. 180
  10. 140
  11. 150
  12. 60
  13. 120
  14. 60
  15. 170
  16. 105
  17. 120
  18. 90
  19. 35
  20. Acute
  21. 170
  22. 90
  23. Acute
  24. 35
  25. 120
  26. 55
  27. 210
  28. 80
  29. 90
  30. 150
  31. 150
  32. 50
  33. 85
  34. 130
  35. 120
  36. 70
  37. Right
  38. 125
  39. 25
  40. 110

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