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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 86 · 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 150°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  5. 5.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. 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 11 o'clock (in degrees)?
  12. 12.An angle measures 35°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  13. 13.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  16. 16.An angle measures 15°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  17. 17.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 70° and 70°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  24. 24.Two angles of a triangle are 25° and 110°. What is the third angle (in degrees)?
  25. 25.An angle measures 20°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  26. 26.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  27. 27.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  28. 28.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 25° and 55°. What is the third angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  31. 31.An angle measures 170°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  32. 32.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  34. 34.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  35. 35.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 30° and 85°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 170
  3. 115
  4. Right
  5. 210
  6. 75
  7. 150
  8. 20
  9. 55
  10. 95
  11. 30
  12. Acute
  13. 60
  14. 230
  15. 120
  16. Acute
  17. 105
  18. 40
  19. 120
  20. 35
  21. 135
  22. 65
  23. 90
  24. 45
  25. Acute
  26. Obtuse
  27. Acute
  28. 130
  29. 100
  30. 30
  31. Obtuse
  32. 100
  33. 85
  34. Straight
  35. 110
  36. 80
  37. 50
  38. 55
  39. 65
  40. 90

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