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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 857 · 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.An angle measures 125°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  2. 2.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  5. 5.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 50° and 35°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 75° and 80°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 65° and 20°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 75° and 35°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?
  22. 22.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  23. 23.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 40° and 20°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 65° and 85°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 45° and 125°. What is the third angle (in degrees)?
  34. 34.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  35. 35.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 50° and 90°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. 35
  3. 30
  4. Right
  5. 65
  6. 125
  7. 90
  8. 30
  9. 50
  10. 180
  11. 95
  12. 220
  13. 60
  14. 115
  15. 240
  16. 250
  17. 25
  18. 95
  19. 130
  20. 70
  21. 10
  22. Acute
  23. 120
  24. 170
  25. 70
  26. 115
  27. 120
  28. 20
  29. 70
  30. 30
  31. 30
  32. 10
  33. 10
  34. Straight
  35. 65
  36. 20
  37. 165
  38. 45
  39. 130
  40. 40

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