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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 419 · 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.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 95° and 55°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  9. 9.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  10. 10.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 50° and 90°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  18. 18.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  22. 22.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  23. 23.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  26. 26.An angle measures 160°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  27. 27.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  31. 31.Two angles of a triangle are 80° and 25°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  36. 36.An angle measures 50°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  37. 37.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  38. 38.An angle measures 120°. 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 40°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?

Answer key

  1. 230
  2. 70
  3. 55
  4. 10
  5. 60
  6. 30
  7. 25
  8. 90
  9. Acute
  10. 35
  11. 190
  12. 30
  13. 40
  14. 50
  15. 70
  16. 20
  17. 120
  18. 25
  19. 65
  20. 5
  21. 50
  22. Right
  23. 120
  24. 150
  25. 200
  26. Obtuse
  27. 60
  28. 180
  29. 60
  30. 90
  31. 75
  32. 140
  33. 70
  34. 25
  35. 150
  36. Acute
  37. 200
  38. Obtuse
  39. 50
  40. 120

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