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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 359 · 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.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  4. 4.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 35° and 20°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 50° and 85°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  13. 13.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 130° and 60°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 30° and 20°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  23. 23.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  24. 24.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  27. 27.An angle measures 160°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  28. 28.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 70° and 120°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  32. 32.An angle measures 140°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  33. 33.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  35. 35.Two angles of a triangle are 40° and 80°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 35° and 35°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  38. 38.An angle measures 60°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  39. 39.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?

Answer key

  1. 110
  2. 70
  3. Straight
  4. 120
  5. 25
  6. 25
  7. 125
  8. 45
  9. 90
  10. 165
  11. 20
  12. Right
  13. 100
  14. 30
  15. 180
  16. 10
  17. 170
  18. 170
  19. 70
  20. 130
  21. 30
  22. 55
  23. Acute
  24. 130
  25. 90
  26. 140
  27. Obtuse
  28. 45
  29. 170
  30. 60
  31. 60
  32. Obtuse
  33. 55
  34. 150
  35. 60
  36. 110
  37. 170
  38. Acute
  39. 75
  40. 150

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