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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 964 · 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.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 80° and 25°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  6. 6.An angle measures 30°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  7. 7.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  8. 8.An angle measures 130°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  9. 9.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  12. 12.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  13. 13.Two angles of a triangle are 75° and 90°. What is the third angle (in degrees)?
  14. 14.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  15. 15.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 50° and 25°. What is the third angle (in degrees)?
  17. 17.An angle measures 140°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  18. 18.Two angles of a triangle are 20° and 75°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 70° and 170°. What is the third angle (in degrees)?
  23. 23.An angle measures 65°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  24. 24.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  25. 25.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 140° and 140°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  33. 33.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  34. 34.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 25° and 105°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 90° and 150°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?

Answer key

  1. 110
  2. 150
  3. 140
  4. 75
  5. 85
  6. Acute
  7. 70
  8. Obtuse
  9. 90
  10. 200
  11. 120
  12. Straight
  13. 15
  14. Acute
  15. 150
  16. 105
  17. Obtuse
  18. 85
  19. 135
  20. 110
  21. 90
  22. 120
  23. Acute
  24. Right
  25. 150
  26. 190
  27. 165
  28. 80
  29. 100
  30. 100
  31. 60
  32. 150
  33. Obtuse
  34. 60
  35. 30
  36. 50
  37. 160
  38. 120
  39. 15
  40. 75

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