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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 760 · 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 of a triangle are 30° and 130°. What is the third angle (in degrees)?
  2. 2.An angle measures 65°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  3. 3.Two angles of a triangle are 20° and 110°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 50° and 85°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 100° and 140°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  13. 13.An angle measures 75°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  14. 14.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  15. 15.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  16. 16.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  19. 19.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  20. 20.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 70° and 45°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  28. 28.An angle measures 170°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  29. 29.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  32. 32.An angle measures 50°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  33. 33.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  36. 36.An angle measures 10°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  37. 37.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?

Answer key

  1. 20
  2. Acute
  3. 50
  4. 55
  5. 90
  6. 150
  7. 160
  8. 45
  9. 120
  10. 5
  11. 60
  12. 210
  13. Acute
  14. 120
  15. Straight
  16. 60
  17. 70
  18. 55
  19. Right
  20. 30
  21. 65
  22. 55
  23. 105
  24. 120
  25. 150
  26. 60
  27. 160
  28. Obtuse
  29. 110
  30. 160
  31. 85
  32. Acute
  33. 200
  34. 155
  35. 80
  36. Acute
  37. 90
  38. 115
  39. 150
  40. 170

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