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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 748 · 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 80°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  4. 4.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  5. 5.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  6. 6.An angle measures 100°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  7. 7.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 70° and 45°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 55° and 100°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 60° and 80°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  16. 16.An angle measures 45°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  17. 17.Two angles of a triangle are 55° and 70°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  24. 24.An angle measures 85°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  25. 25.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  27. 27.An angle measures 155°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  28. 28.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  31. 31.An angle measures 65°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  32. 32.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  33. 33.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  34. 34.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 80° and 75°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  40. 40.An angle measures 105°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight

Answer key

  1. 100
  2. 110
  3. 10
  4. Straight
  5. 40
  6. Obtuse
  7. 110
  8. 65
  9. 140
  10. 25
  11. 165
  12. 40
  13. 120
  14. 30
  15. 60
  16. Acute
  17. 55
  18. 230
  19. 40
  20. 55
  21. 100
  22. 120
  23. 20
  24. Acute
  25. 110
  26. 60
  27. Obtuse
  28. 10
  29. 65
  30. 85
  31. Acute
  32. 120
  33. Right
  34. 65
  35. 150
  36. 25
  37. 35
  38. 90
  39. 140
  40. Obtuse

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