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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 94 · 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.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  3. 3.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  5. 5.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  6. 6.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  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 1 o'clock (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 85° and 50°. What is the third angle (in degrees)?
  11. 11.Two angles of a triangle are 85° and 40°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  14. 14.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  17. 17.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  18. 18.Two angles of a triangle are 55° and 85°. What is the third 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 40° and 35°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  23. 23.An angle measures 30°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  24. 24.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 70° and 200°. 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.An angle measures 85°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  33. 33.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  37. 37.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  38. 38.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?

Answer key

  1. 80
  2. Obtuse
  3. 15
  4. 155
  5. Acute
  6. 140
  7. 180
  8. 30
  9. 120
  10. 45
  11. 55
  12. 160
  13. Right
  14. 60
  15. 60
  16. 60
  17. Acute
  18. 40
  19. 40
  20. 105
  21. 150
  22. 150
  23. Acute
  24. 20
  25. 15
  26. 90
  27. 70
  28. 25
  29. 75
  30. 90
  31. 85
  32. Acute
  33. 130
  34. 150
  35. 85
  36. 120
  37. Straight
  38. 110
  39. 70
  40. 180

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