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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 861 · 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.An angle measures 175°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  2. 2.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 100° and 40°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 140°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 30° and 75°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  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 6 o'clock (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  14. 14.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  19. 19.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 100° and 55°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 30°. What is the other 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 90° and 35°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  34. 34.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  35. 35.An angle measures 50°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  36. 36.Two angles of a triangle are 30° and 30°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 70° and 30°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?

Answer key

  1. Obtuse
  2. 5
  3. 85
  4. 120
  5. 40
  6. 160
  7. 75
  8. 150
  9. Straight
  10. 85
  11. 30
  12. 180
  13. Right
  14. 25
  15. 145
  16. 65
  17. 65
  18. 150
  19. 35
  20. 25
  21. 115
  22. 30
  23. 165
  24. 25
  25. 155
  26. 210
  27. 200
  28. 220
  29. 60
  30. 160
  31. 55
  32. 55
  33. 75
  34. Acute
  35. Acute
  36. 120
  37. 100
  38. 80
  39. 70
  40. 60

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