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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 96 · 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 110°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  4. 4.An angle measures 100°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  5. 5.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  8. 8.An angle measures 15°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  9. 9.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  12. 12.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  13. 13.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  18. 18.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 25° and 35°. What is the third angle (in degrees)?
  25. 25.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  26. 26.Two angles of a triangle are 30° and 25°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 75° and 20°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 110° and 180°. What is the third angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 20° and 155°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  34. 34.An angle measures 140°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  35. 35.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 55° and 55°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?

Answer key

  1. 70
  2. 50
  3. 165
  4. Obtuse
  5. 105
  6. 160
  7. 30
  8. Acute
  9. 90
  10. 5
  11. 120
  12. Straight
  13. 10
  14. 150
  15. 15
  16. 30
  17. Right
  18. 180
  19. 220
  20. 80
  21. 90
  22. 140
  23. 15
  24. 120
  25. Acute
  26. 125
  27. 20
  28. 85
  29. 70
  30. 35
  31. 5
  32. 55
  33. 90
  34. Obtuse
  35. 110
  36. 70
  37. 65
  38. 125
  39. 40
  40. 120

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