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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 707 · 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 140° and 130°. What is the third angle (in degrees)?
  2. 2.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  3. 3.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  5. 5.An angle measures 105°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  6. 6.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 65° and 105°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 40° and 85°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 45° and 35°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 60° and 40°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 100° and 75°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  26. 26.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  27. 27.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 60° and 230°. 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.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  33. 33.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  34. 34.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  35. 35.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 30° and 95°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?

Answer key

  1. 90
  2. Right
  3. 40
  4. 160
  5. Obtuse
  6. 30
  7. 10
  8. 55
  9. 10
  10. 100
  11. 170
  12. 140
  13. 40
  14. 85
  15. 5
  16. 65
  17. 80
  18. 95
  19. 65
  20. 5
  21. 85
  22. 35
  23. 80
  24. 25
  25. 115
  26. Obtuse
  27. 90
  28. 180
  29. 70
  30. 90
  31. 55
  32. 140
  33. Straight
  34. Obtuse
  35. 40
  36. 70
  37. 140
  38. 25
  39. 55
  40. 150

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