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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 682 · 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 70°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 85° and 75°. What is the third angle (in degrees)?
  6. 6.An angle measures 145°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  7. 7.An angle measures 150°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  8. 8.Two angles of a triangle are 30° and 110°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  11. 11.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  17. 17.An angle measures 80°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  18. 18.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  19. 19.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 60° and 115°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 45° and 100°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 25° and 85°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 60° and 45°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?
  35. 35.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  36. 36.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?

Answer key

  1. 110
  2. 180
  3. 120
  4. 120
  5. 20
  6. Obtuse
  7. Obtuse
  8. 40
  9. 150
  10. Straight
  11. 30
  12. 90
  13. 15
  14. 145
  15. 105
  16. 200
  17. Acute
  18. Right
  19. 90
  20. 20
  21. 150
  22. 35
  23. 130
  24. 5
  25. 35
  26. 70
  27. 75
  28. 95
  29. 65
  30. 165
  31. 40
  32. 260
  33. 100
  34. 50
  35. Acute
  36. 155
  37. 130
  38. 55
  39. 90
  40. 190

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