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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 271 · 40 sums
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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 70° and 100°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  5. 5.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  6. 6.An angle measures 115°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  7. 7.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 95° and 75°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 65° and 95°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  16. 16.An angle measures 145°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  17. 17.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 50° and 170°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 40° and 120°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  27. 27.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  28. 28.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 60° and 140°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 20° and 120°. What is the third angle (in degrees)?
  36. 36.An angle measures 75°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  37. 37.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  39. 39.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  40. 40.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?

Answer key

  1. 190
  2. 140
  3. 120
  4. Right
  5. 50
  6. Obtuse
  7. 60
  8. 55
  9. 10
  10. 20
  11. 115
  12. 20
  13. 170
  14. 60
  15. 200
  16. Obtuse
  17. 60
  18. 230
  19. 90
  20. 155
  21. 30
  22. 130
  23. 140
  24. 100
  25. 20
  26. 95
  27. Acute
  28. 20
  29. 160
  30. 150
  31. 105
  32. 120
  33. 45
  34. 55
  35. 40
  36. Acute
  37. 135
  38. 40
  39. Straight
  40. 40

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