← Angles lesson New set →

Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 435 · 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 10°. What is the other angle (in degrees)?
  2. 2.Two angles of a triangle are 25° and 30°. What is the third angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  4. 4.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  8. 8.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  9. 9.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 90° and 55°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 50° and 170°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 75° and 50°. What is the third angle (in degrees)?
  15. 15.An angle measures 160°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  16. 16.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  18. 18.An angle measures 155°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  19. 19.An angle measures 170°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  20. 20.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 70° and 170°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 90° and 75°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  28. 28.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  29. 29.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 40° and 30°. What is the third angle (in degrees)?
  31. 31.An angle measures 165°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  32. 32.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  38. 38.Two angles of a triangle are 25° and 145°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?

Answer key

  1. 170
  2. 125
  3. Straight
  4. 50
  5. 15
  6. 75
  7. 150
  8. Acute
  9. 150
  10. 35
  11. 140
  12. 135
  13. 80
  14. 55
  15. Obtuse
  16. 60
  17. 10
  18. Obtuse
  19. Obtuse
  20. 165
  21. 120
  22. 200
  23. 5
  24. 90
  25. 15
  26. 60
  27. 180
  28. Right
  29. 100
  30. 110
  31. Obtuse
  32. 80
  33. 30
  34. 30
  35. 90
  36. 55
  37. 30
  38. 10
  39. 60
  40. 95

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