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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 652 · 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.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  2. 2.Two angles of a triangle are 25° and 125°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  4. 4.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  5. 5.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  7. 7.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  8. 8.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  16. 16.An angle measures 75°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  17. 17.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 35° and 45°. What is the third angle (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 85°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  24. 24.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  25. 25.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 60° and 95°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  30. 30.An angle measures 35°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  31. 31.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 150°. What is the third angle (in degrees)?
  34. 34.An angle measures 145°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  35. 35.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 95° and 50°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 65° and 80°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?

Answer key

  1. 75
  2. 30
  3. 120
  4. Obtuse
  5. 70
  6. 135
  7. Right
  8. 30
  9. 260
  10. 70
  11. 155
  12. 70
  13. 90
  14. 50
  15. 70
  16. Acute
  17. 150
  18. 100
  19. 35
  20. 95
  21. 80
  22. 80
  23. 160
  24. Straight
  25. 35
  26. 85
  27. 25
  28. 30
  29. 120
  30. Acute
  31. 90
  32. 60
  33. 150
  34. Obtuse
  35. 55
  36. 35
  37. 190
  38. 120
  39. 35
  40. 30

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