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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 826 · 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 90°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  3. 3.An angle measures 140°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  4. 4.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  5. 5.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  6. 6.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 25° and 150°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  13. 13.An angle measures 60°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  14. 14.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  15. 15.Two angles of a triangle are 85° and 80°. What is the third 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 of a triangle are 50° and 30°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 85° and 90°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 65° and 45°. What is the third angle (in degrees)?
  21. 21.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  22. 22.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  25. 25.An angle measures 15°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  26. 26.An angle measures 170°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  27. 27.Two angles of a triangle are 25° and 45°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  31. 31.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  32. 32.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  34. 34.An angle measures 160°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  35. 35.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  37. 37.An angle measures 135°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  38. 38.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?

Answer key

  1. 90
  2. 45
  3. Obtuse
  4. 120
  5. Right
  6. 85
  7. 130
  8. 165
  9. 5
  10. 95
  11. 75
  12. 60
  13. Acute
  14. 120
  15. 15
  16. 210
  17. 100
  18. 5
  19. 150
  20. 70
  21. Acute
  22. 65
  23. 55
  24. 230
  25. Acute
  26. Obtuse
  27. 110
  28. 150
  29. 75
  30. 105
  31. Straight
  32. 45
  33. 210
  34. Obtuse
  35. 30
  36. 90
  37. Obtuse
  38. 150
  39. 110
  40. 145

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