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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 527 · 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 130°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  2. 2.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  3. 3.An angle measures 40°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  4. 4.Two angles of a triangle are 45° and 110°. What is the third angle (in degrees)?
  5. 5.An angle measures 120°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  6. 6.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. 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 40°. 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.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  13. 13.Two angles of a triangle are 65° and 50°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  18. 18.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  21. 21.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  22. 22.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  23. 23.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 20° and 145°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 85° and 20°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?

Answer key

  1. Obtuse
  2. 100
  3. Acute
  4. 25
  5. Obtuse
  6. 40
  7. 25
  8. 70
  9. 145
  10. 140
  11. 120
  12. 60
  13. 65
  14. 210
  15. 50
  16. 150
  17. Right
  18. 135
  19. 90
  20. 190
  21. Acute
  22. Straight
  23. 115
  24. 90
  25. 15
  26. 240
  27. 10
  28. 45
  29. 35
  30. 150
  31. 85
  32. 75
  33. 30
  34. 80
  35. 170
  36. 230
  37. 125
  38. 45
  39. 55
  40. 75

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