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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 966 · 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 20° and 115°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 90° and 55°. What is the third angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  7. 7.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 35° and 40°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  13. 13.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  14. 14.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  17. 17.An angle measures 110°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  18. 18.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  21. 21.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  22. 22.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 40° and 30°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 60° and 50°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  31. 31.Two angles of a triangle are 75° and 35°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 55° and 100°. What is the third angle (in degrees)?
  38. 38.An angle measures 175°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  39. 39.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?

Answer key

  1. 45
  2. 30
  3. 80
  4. 65
  5. 35
  6. Right
  7. 65
  8. 85
  9. 115
  10. 105
  11. 45
  12. 70
  13. Straight
  14. 180
  15. 20
  16. 120
  17. Obtuse
  18. 190
  19. 110
  20. 130
  21. Acute
  22. 120
  23. 150
  24. 45
  25. 85
  26. 110
  27. 10
  28. 70
  29. 95
  30. 150
  31. 70
  32. 110
  33. 45
  34. 40
  35. 140
  36. 25
  37. 25
  38. Obtuse
  39. 150
  40. 105

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