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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 659 · 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 20°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  4. 4.An angle measures 35°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  5. 5.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  7. 7.An angle measures 125°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  8. 8.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  11. 11.Two angles of a triangle are 65° and 95°. What is the third angle (in degrees)?
  12. 12.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  13. 13.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  15. 15.An angle measures 75°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  16. 16.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  28. 28.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  29. 29.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 35° and 95°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  35. 35.An angle measures 145°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  36. 36.Two angles of a triangle are 95° and 40°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 20° and 35°. What is the third angle (in degrees)?
  38. 38.An angle measures 120°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  39. 39.Two angles of a triangle are 70° and 85°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?

Answer key

  1. 160
  2. 75
  3. 90
  4. Acute
  5. 110
  6. 155
  7. Obtuse
  8. 180
  9. 15
  10. Straight
  11. 20
  12. Acute
  13. 150
  14. 80
  15. Acute
  16. 85
  17. 20
  18. 60
  19. 85
  20. 30
  21. 5
  22. 90
  23. 170
  24. 210
  25. 25
  26. 60
  27. 25
  28. Acute
  29. 55
  30. 100
  31. 45
  32. 50
  33. 120
  34. 120
  35. Obtuse
  36. 45
  37. 125
  38. Obtuse
  39. 25
  40. 60

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