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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 727 · 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 25° and 110°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  4. 4.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  6. 6.Two angles of a triangle are 75° and 25°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 35° and 85°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  10. 10.An angle measures 115°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  11. 11.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  13. 13.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  14. 14.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 25° and 95°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  20. 20.An angle measures 100°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  21. 21.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 25° and 85°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  28. 28.An angle measures 85°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  29. 29.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 85° and 30°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  35. 35.An angle measures 50°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  36. 36.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  37. 37.An angle measures 40°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  38. 38.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?

Answer key

  1. 45
  2. 90
  3. Right
  4. 55
  5. 120
  6. 80
  7. 60
  8. 110
  9. 125
  10. Obtuse
  11. 65
  12. 70
  13. Straight
  14. 140
  15. 140
  16. 60
  17. 105
  18. 60
  19. 60
  20. Obtuse
  21. 90
  22. 70
  23. 25
  24. 85
  25. 110
  26. 130
  27. 150
  28. Acute
  29. 140
  30. 65
  31. 150
  32. 85
  33. 75
  34. 30
  35. Acute
  36. 135
  37. Acute
  38. 120
  39. 50
  40. 30

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