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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 646 · 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 together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  5. 5.An angle measures 25°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  6. 6.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  7. 7.Two angles of a triangle are 50° and 35°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 70° and 40°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  14. 14.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  15. 15.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  19. 19.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  20. 20.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  21. 21.An angle measures 160°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  22. 22.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  25. 25.An angle measures 150°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  26. 26.Two angles of a triangle are 25° and 50°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 100° and 40°. What is the third angle (in degrees)?
  30. 30.An angle measures 45°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  31. 31.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 25° and 90°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 75° and 80°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  39. 39.An angle measures 55°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  40. 40.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?

Answer key

  1. 160
  2. 30
  3. 150
  4. 200
  5. Acute
  6. Straight
  7. 95
  8. 70
  9. 60
  10. 100
  11. 145
  12. 35
  13. 120
  14. Right
  15. 80
  16. 210
  17. 170
  18. 130
  19. Obtuse
  20. 90
  21. Obtuse
  22. 120
  23. 30
  24. 75
  25. Obtuse
  26. 105
  27. 180
  28. 50
  29. 40
  30. Acute
  31. 85
  32. 65
  33. 60
  34. 130
  35. 25
  36. 150
  37. 100
  38. 70
  39. Acute
  40. 190

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