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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 969 · 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 130°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  2. 2.Two angles of a triangle are 55° and 65°. What is the third angle (in degrees)?
  3. 3.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  4. 4.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  11. 11.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  12. 12.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  13. 13.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  14. 14.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  20. 20.An angle measures 155°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  21. 21.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  24. 24.An angle measures 170°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  25. 25.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  28. 28.An angle measures 175°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  29. 29.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  32. 32.An angle measures 110°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  33. 33.An angle measures 25°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  34. 34.An angle measures 80°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  35. 35.An angle measures 115°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  36. 36.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 55° and 55°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. 60
  3. Acute
  4. 200
  5. 150
  6. 60
  7. 100
  8. 50
  9. 30
  10. 120
  11. Obtuse
  12. Straight
  13. Right
  14. 40
  15. 55
  16. 60
  17. 65
  18. 160
  19. 230
  20. Obtuse
  21. 60
  22. 30
  23. 20
  24. Obtuse
  25. 85
  26. 65
  27. 45
  28. Obtuse
  29. 125
  30. 45
  31. 90
  32. Obtuse
  33. Acute
  34. Acute
  35. Obtuse
  36. 25
  37. 115
  38. 105
  39. 75
  40. 70

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