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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 773 · 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.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  3. 3.Two angles of a triangle are 70° and 40°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  9. 9.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  10. 10.An angle measures 25°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  11. 11.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 30° and 135°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  22. 22.An angle measures 105°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  23. 23.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  24. 24.Two angles of a triangle are 25° and 90°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  31. 31.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  32. 32.Two angles of a triangle are 25° and 75°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  36. 36.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  37. 37.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 25
  3. 70
  4. 160
  5. 10
  6. 60
  7. 70
  8. 65
  9. Right
  10. Acute
  11. 180
  12. 15
  13. 190
  14. 110
  15. 90
  16. 75
  17. 180
  18. 80
  19. 60
  20. 230
  21. 160
  22. Obtuse
  23. 30
  24. 65
  25. 80
  26. 160
  27. 70
  28. 130
  29. 110
  30. 90
  31. Straight
  32. 80
  33. 155
  34. 5
  35. 115
  36. Acute
  37. 70
  38. 130
  39. 70
  40. 140

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