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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 929 · 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.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  2. 2.Two angles of a triangle are 85° and 30°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 30° and 45°. What is the third angle (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  7. 7.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 55° and 30°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 25° and 25°. What is the third angle (in degrees)?
  13. 13.An angle measures 25°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  14. 14.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 35° and 105°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  24. 24.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  25. 25.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  27. 27.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  28. 28.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 30° and 70°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 30° and 55°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?

Answer key

  1. 90
  2. 65
  3. 80
  4. 50
  5. 105
  6. Straight
  7. 10
  8. 95
  9. 140
  10. 130
  11. 150
  12. 130
  13. Acute
  14. 20
  15. 25
  16. 120
  17. 120
  18. 150
  19. 35
  20. 35
  21. 30
  22. 40
  23. 90
  24. Obtuse
  25. 170
  26. 30
  27. Right
  28. 60
  29. 15
  30. 55
  31. 50
  32. 80
  33. 85
  34. 130
  35. 260
  36. 95
  37. 180
  38. 90
  39. 25
  40. 25

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