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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 908 · 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 75° and 95°. What is the third angle (in degrees)?
  2. 2.An angle measures 35°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  4. 4.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 40° and 65°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  13. 13.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  16. 16.An angle measures 130°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  17. 17.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  19. 19.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  20. 20.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  21. 21.Two angles of a triangle are 20° and 30°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 70° and 40°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 35° and 40°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  33. 33.An angle measures 165°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  34. 34.An angle measures 15°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  35. 35.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  38. 38.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  39. 39.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 120° and 100°. What is the third angle (in degrees)?

Answer key

  1. 10
  2. Acute
  3. Right
  4. 25
  5. 140
  6. 60
  7. 75
  8. 120
  9. 90
  10. 120
  11. 210
  12. 80
  13. Acute
  14. 30
  15. 50
  16. Obtuse
  17. 240
  18. 120
  19. Obtuse
  20. Straight
  21. 130
  22. 25
  23. 180
  24. 165
  25. 30
  26. 15
  27. 5
  28. 75
  29. 70
  30. 105
  31. 30
  32. 15
  33. Obtuse
  34. Acute
  35. 80
  36. 135
  37. 60
  38. Acute
  39. 55
  40. 140

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