← Angles lesson New set →

Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 184 · 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 100° and 50°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 30° and 115°. What is the third angle (in degrees)?
  3. 3.An angle measures 120°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  4. 4.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 70° and 60°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  11. 11.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  12. 12.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 20° and 65°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 75° and 95°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  19. 19.An angle measures 100°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  20. 20.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 50° and 55°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 60° and 30°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 25° and 80°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 120° and 70°. 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.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 60° and 140°. What is the third angle (in degrees)?
  40. 40.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right

Answer key

  1. 30
  2. 35
  3. Obtuse
  4. 65
  5. 230
  6. 50
  7. 60
  8. 40
  9. 165
  10. 130
  11. Straight
  12. 160
  13. 140
  14. 75
  15. 95
  16. 45
  17. 10
  18. 5
  19. Obtuse
  20. 5
  21. 120
  22. 75
  23. 70
  24. 85
  25. 90
  26. 250
  27. 200
  28. 150
  29. 180
  30. 130
  31. 90
  32. 150
  33. 15
  34. 25
  35. 75
  36. 170
  37. 60
  38. 90
  39. 160
  40. Right

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