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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 693 · 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.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  6. 6.An angle measures 70°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  7. 7.An angle measures 150°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  8. 8.Three angles meet at a point. Two of them are 80° and 120°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 85° and 70°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 70° and 120°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. 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 150°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 65° and 75°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 45° and 95°. 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.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  22. 22.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  23. 23.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  25. 25.An angle measures 165°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  26. 26.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  27. 27.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  29. 29.An angle measures 15°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  30. 30.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 50° and 120°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 50° and 100°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  38. 38.An angle measures 80°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  39. 39.An angle measures 175°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  40. 40.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?

Answer key

  1. Right
  2. 150
  3. 145
  4. 90
  5. 80
  6. Acute
  7. Obtuse
  8. 160
  9. 70
  10. 25
  11. 10
  12. 25
  13. 170
  14. 50
  15. 60
  16. 40
  17. 20
  18. 40
  19. 60
  20. 70
  21. 25
  22. Acute
  23. 105
  24. 35
  25. Obtuse
  26. Straight
  27. 95
  28. 70
  29. Acute
  30. 75
  31. 190
  32. 190
  33. 180
  34. 150
  35. 30
  36. 40
  37. 220
  38. Acute
  39. Obtuse
  40. 155

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