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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 955 · 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.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  6. 6.An angle measures 80°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  7. 7.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  10. 10.An angle measures 150°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  11. 11.Two angles of a triangle are 85° and 85°. What is the third angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 75° and 20°. What is the third angle (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  18. 18.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  20. 20.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  21. 21.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 65° and 55°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 65° and 45°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  34. 34.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  35. 35.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 40° and 100°. What is the third angle (in degrees)?

Answer key

  1. 180
  2. 150
  3. 65
  4. 140
  5. 90
  6. Acute
  7. 90
  8. 150
  9. 160
  10. Obtuse
  11. 10
  12. 45
  13. 15
  14. 60
  15. 30
  16. 85
  17. Right
  18. 55
  19. 80
  20. Straight
  21. 40
  22. 60
  23. 5
  24. 60
  25. 35
  26. 105
  27. 200
  28. 100
  29. 70
  30. 60
  31. 145
  32. 190
  33. 210
  34. Obtuse
  35. 100
  36. 90
  37. 110
  38. 155
  39. 80
  40. 40

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