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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 119 · 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.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  3. 3.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 45° and 35°. What is the third angle (in degrees)?
  7. 7.An angle measures 70°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  8. 8.An angle measures 100°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  9. 9.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  10. 10.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  11. 11.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  17. 17.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 85° and 75°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 35° and 100°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 60° and 95°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 40° and 90°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  30. 30.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  31. 31.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 35° and 85°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  37. 37.An angle measures 85°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  38. 38.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?

Answer key

  1. 80
  2. Straight
  3. 85
  4. 30
  5. 70
  6. 100
  7. Acute
  8. Obtuse
  9. 40
  10. Obtuse
  11. 90
  12. 140
  13. 155
  14. 55
  15. 150
  16. 120
  17. 60
  18. 20
  19. 45
  20. 10
  21. 25
  22. 105
  23. 50
  24. 145
  25. 25
  26. 170
  27. 50
  28. 100
  29. 230
  30. Acute
  31. 70
  32. 170
  33. 45
  34. 60
  35. 180
  36. 200
  37. Acute
  38. 5
  39. 60
  40. 110

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