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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 531 · 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 50° and 60°. What is the third angle (in degrees)?
  2. 2.An angle measures 40°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  3. 3.An angle measures 100°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  4. 4.Two angles of a triangle are 30° and 40°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  10. 10.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 110° and 180°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 180°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 70° and 70°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 30° and 130°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  28. 28.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  29. 29.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  30. 30.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  31. 31.An angle measures 50°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  32. 32.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  36. 36.An angle measures 25°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  37. 37.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?

Answer key

  1. 70
  2. Acute
  3. Obtuse
  4. 110
  5. 110
  6. 190
  7. 60
  8. 55
  9. Straight
  10. 40
  11. 20
  12. 145
  13. 150
  14. 70
  15. 60
  16. 50
  17. 110
  18. 15
  19. 40
  20. 30
  21. 85
  22. 200
  23. 20
  24. 90
  25. 15
  26. 80
  27. 135
  28. Acute
  29. 95
  30. Right
  31. Acute
  32. 35
  33. 150
  34. 110
  35. 30
  36. Acute
  37. 60
  38. 125
  39. 180
  40. 35

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