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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 984 · 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 110°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  2. 2.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 40° and 75°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 55° and 110°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  8. 8.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  9. 9.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 30° and 50°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  12. 12.An angle measures 95°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  13. 13.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  14. 14.An angle measures 105°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  15. 15.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  23. 23.An angle measures 65°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  24. 24.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 120°. What is the third 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 65° and 100°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 95° and 50°. What is the third angle (in degrees)?
  31. 31.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  32. 32.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 25° and 75°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 25° and 25°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 70° and 60°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  40. 40.An angle measures 25°. What kind of angle is it? (a) Acute (b) Right (c) Straight

Answer key

  1. Obtuse
  2. 60
  3. 65
  4. 15
  5. 55
  6. 70
  7. Straight
  8. Acute
  9. 170
  10. 100
  11. 120
  12. Obtuse
  13. 150
  14. Obtuse
  15. 130
  16. 145
  17. 230
  18. 65
  19. 85
  20. 150
  21. 150
  22. 45
  23. Acute
  24. 55
  25. 240
  26. 90
  27. 180
  28. 120
  29. 15
  30. 35
  31. Obtuse
  32. 130
  33. 80
  34. 50
  35. 35
  36. 15
  37. 130
  38. 50
  39. 30
  40. Acute

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