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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 694 · 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.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  2. 2.An angle measures 80°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  3. 3.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  9. 9.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  10. 10.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 60° and 100°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  16. 16.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  17. 17.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 60° and 30°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 55° and 45°. What is the third angle (in degrees)?
  27. 27.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  28. 28.Two angles of a triangle are 20° and 105°. What is the third angle (in degrees)?
  29. 29.An angle measures 25°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  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 30°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 70° and 70°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 85° and 75°. What is the third angle (in degrees)?
  34. 34.An angle measures 100°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  35. 35.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  38. 38.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?

Answer key

  1. 180
  2. Acute
  3. 150
  4. 150
  5. 70
  6. 60
  7. 85
  8. 65
  9. Acute
  10. 125
  11. 20
  12. 165
  13. 75
  14. 35
  15. 80
  16. Right
  17. 30
  18. 120
  19. 95
  20. 60
  21. 160
  22. 110
  23. 15
  24. 80
  25. 90
  26. 80
  27. Straight
  28. 55
  29. Acute
  30. 90
  31. 60
  32. 40
  33. 20
  34. Obtuse
  35. 105
  36. 75
  37. 190
  38. Acute
  39. 60
  40. 85

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