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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 368 · 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.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  2. 2.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 100° and 75°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 30° and 40°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  9. 9.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  10. 10.Two angles of a triangle are 25° and 115°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.Two angles of a triangle are 65° and 30°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 65° and 100°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  23. 23.An angle measures 15°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  24. 24.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  28. 28.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  31. 31.An angle measures 10°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  32. 32.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  33. 33.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  34. 34.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 60° and 75°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?

Answer key

  1. Straight
  2. 180
  3. 85
  4. 140
  5. 45
  6. 5
  7. 110
  8. 155
  9. Acute
  10. 40
  11. 60
  12. 85
  13. 35
  14. 135
  15. 100
  16. 150
  17. 30
  18. 165
  19. 40
  20. 15
  21. 90
  22. 70
  23. Acute
  24. 90
  25. 60
  26. 15
  27. 180
  28. 45
  29. 10
  30. 45
  31. Acute
  32. 90
  33. Right
  34. 120
  35. 145
  36. 230
  37. 60
  38. 20
  39. 45
  40. 120

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