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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 498 · 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 70° and 80°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 60° and 40°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 120° and 130°. What is the third 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.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  6. 6.An angle measures 65°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  7. 7.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 80° and 50°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  13. 13.An angle measures 175°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  14. 14.Two angles of a triangle are 35° and 120°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  17. 17.An angle measures 100°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  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 20°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  21. 21.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  22. 22.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 80° and 90°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?
  31. 31.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  32. 32.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  37. 37.An angle measures 55°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  38. 38.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?

Answer key

  1. 210
  2. 80
  3. 110
  4. 50
  5. Obtuse
  6. Acute
  7. 150
  8. 155
  9. 130
  10. 50
  11. 15
  12. 105
  13. Obtuse
  14. 25
  15. 90
  16. 50
  17. Obtuse
  18. 150
  19. 70
  20. 260
  21. Right
  22. 85
  23. 10
  24. 30
  25. 75
  26. 115
  27. 110
  28. 120
  29. 50
  30. 90
  31. Straight
  32. 20
  33. 25
  34. 15
  35. 165
  36. 180
  37. Acute
  38. 60
  39. 60
  40. 220

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