← Angles lesson New set →

Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 256 · 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 of a triangle are 40° and 65°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  4. 4.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 65° and 60°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  11. 11.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  12. 12.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  13. 13.An angle measures 45°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.An angle measures 75°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  16. 16.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 85° and 90°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  22. 22.An angle measures 130°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  23. 23.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 35° and 105°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 20° and 130°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 45° and 75°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  31. 31.An angle measures 145°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  32. 32.Two angles of a triangle are 65° and 110°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  38. 38.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  39. 39.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 100° and 180°. What is the third angle (in degrees)?

Answer key

  1. 75
  2. 20
  3. Straight
  4. 40
  5. 60
  6. 30
  7. 35
  8. 140
  9. 55
  10. 110
  11. Acute
  12. 110
  13. Acute
  14. 30
  15. Acute
  16. 120
  17. 60
  18. 55
  19. 75
  20. 5
  21. 170
  22. Obtuse
  23. 150
  24. 170
  25. 40
  26. 30
  27. 60
  28. 45
  29. 130
  30. 120
  31. Obtuse
  32. 5
  33. 65
  34. 150
  35. 90
  36. 85
  37. 60
  38. Right
  39. 90
  40. 80

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets