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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 288 · 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.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  5. 5.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  6. 6.An angle measures 175°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  7. 7.Two angles of a triangle are 70° and 90°. What is the third angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  9. 9.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  11. 11.An angle measures 160°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  12. 12.An angle measures 110°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  13. 13.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 25° and 110°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 50° and 75°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 75° and 90°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 50° and 170°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 30° and 55°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?
  27. 27.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  28. 28.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  33. 33.Two angles of a triangle are 35° and 40°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 25° and 115°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?

Answer key

  1. 60
  2. 20
  3. 230
  4. 25
  5. Acute
  6. Obtuse
  7. 20
  8. Straight
  9. 115
  10. 85
  11. Obtuse
  12. Obtuse
  13. 160
  14. 45
  15. 45
  16. 55
  17. 15
  18. 105
  19. 140
  20. 20
  21. 65
  22. 70
  23. 35
  24. 95
  25. 125
  26. 85
  27. Right
  28. 35
  29. 170
  30. 130
  31. 120
  32. 30
  33. 105
  34. 90
  35. 45
  36. 40
  37. 115
  38. 15
  39. 180
  40. 85

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