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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 932 · 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 80° and 40°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 7 o'clock (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.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  10. 10.An angle measures 40°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  11. 11.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 85° and 40°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 20° and 55°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  22. 22.An angle measures 60°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  23. 23.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  24. 24.An angle measures 175°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  25. 25.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  36. 36.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  37. 37.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. 75
  3. 110
  4. 15
  5. 80
  6. 150
  7. 25
  8. 90
  9. 50
  10. Acute
  11. 5
  12. 135
  13. 60
  14. 160
  15. 55
  16. 200
  17. 210
  18. 60
  19. 80
  20. 105
  21. 110
  22. Acute
  23. 50
  24. Obtuse
  25. 90
  26. 5
  27. 60
  28. 90
  29. 220
  30. 160
  31. 60
  32. 170
  33. 30
  34. 110
  35. 40
  36. Acute
  37. 35
  38. 30
  39. 115
  40. 180

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