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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 882 · 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 135°. What is the other angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  3. 3.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  7. 7.An angle measures 145°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  8. 8.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  9. 9.Two angles together make a straight line. 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 3 o'clock (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  15. 15.An angle measures 110°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  16. 16.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  18. 18.Two angles of a triangle are 35° and 130°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 70° and 75°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  25. 25.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  26. 26.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  27. 27.An angle measures 130°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  28. 28.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 70° and 65°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  39. 39.An angle measures 70°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  40. 40.An angle measures 15°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute

Answer key

  1. 45
  2. Straight
  3. 75
  4. 170
  5. 25
  6. 135
  7. Obtuse
  8. Acute
  9. 140
  10. 90
  11. 30
  12. 80
  13. 70
  14. 40
  15. Obtuse
  16. 95
  17. 150
  18. 15
  19. 85
  20. 35
  21. 80
  22. 60
  23. 145
  24. 120
  25. Right
  26. 130
  27. Obtuse
  28. 40
  29. 75
  30. 45
  31. 110
  32. 165
  33. 15
  34. 45
  35. 30
  36. 40
  37. 150
  38. 105
  39. Acute
  40. Acute

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