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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 698 · 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 110°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 20° and 25°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  9. 9.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  10. 10.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  16. 16.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  17. 17.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  21. 21.Two angles of a triangle are 60° and 95°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  25. 25.An angle measures 85°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  26. 26.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 45° and 75°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  35. 35.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  36. 36.Two angles of a triangle are 25° and 20°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  38. 38.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  39. 39.Two angles of a triangle are 40° and 130°. What is the third angle (in degrees)?
  40. 40.An angle measures 55°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight

Answer key

  1. 160
  2. 60
  3. 10
  4. 135
  5. 180
  6. 90
  7. 220
  8. 220
  9. Acute
  10. 150
  11. 65
  12. 60
  13. 80
  14. 30
  15. 25
  16. Straight
  17. 130
  18. 120
  19. 60
  20. 120
  21. 25
  22. 75
  23. 40
  24. 100
  25. Acute
  26. 30
  27. 105
  28. 50
  29. 60
  30. 75
  31. 115
  32. 210
  33. 130
  34. 80
  35. Acute
  36. 135
  37. 240
  38. Right
  39. 10
  40. Acute

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