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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 671 · 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.An angle measures 140°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  2. 2.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 60° and 150°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  11. 11.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  12. 12.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  18. 18.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  19. 19.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 80° and 210°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 30° and 60°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 30° and 40°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 40° and 45°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  32. 32.An angle measures 70°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  33. 33.An angle measures 75°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  34. 34.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 40° and 130°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?

Answer key

  1. Obtuse
  2. 150
  3. 160
  4. 80
  5. 70
  6. 120
  7. 150
  8. 150
  9. 5
  10. 110
  11. Straight
  12. 30
  13. 100
  14. 25
  15. 90
  16. 55
  17. 55
  18. Right
  19. 130
  20. 25
  21. 70
  22. 90
  23. 110
  24. 110
  25. 180
  26. 155
  27. 95
  28. 125
  29. 25
  30. 45
  31. 120
  32. Acute
  33. Acute
  34. 60
  35. 120
  36. 10
  37. 80
  38. 65
  39. 145
  40. 35

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