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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 776 · 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 5°. What is the other angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  3. 3.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  4. 4.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  7. 7.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  8. 8.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 25° and 125°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 25° and 150°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  18. 18.An angle measures 105°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  19. 19.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 35° and 20°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  27. 27.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  28. 28.Two angles of a triangle are 45° and 30°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  30. 30.An angle measures 160°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  31. 31.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 20° and 95°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?

Answer key

  1. 85
  2. Straight
  3. 170
  4. Obtuse
  5. 180
  6. Obtuse
  7. Right
  8. 170
  9. 20
  10. 30
  11. 85
  12. 140
  13. 60
  14. 75
  15. 130
  16. 5
  17. 90
  18. Obtuse
  19. 155
  20. 160
  21. 10
  22. 145
  23. 55
  24. 125
  25. 90
  26. 65
  27. Acute
  28. 105
  29. 70
  30. Obtuse
  31. 135
  32. 80
  33. 60
  34. 65
  35. 150
  36. 60
  37. 65
  38. 30
  39. 120
  40. 90

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