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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 669 · 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 100°. What is the other angle (in degrees)?
  2. 2.An angle measures 25°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  3. 3.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  9. 9.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  14. 14.An angle measures 20°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  15. 15.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  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 6 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  19. 19.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  20. 20.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 45° and 70°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  29. 29.An angle measures 35°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  30. 30.Two angles of a triangle are 60° and 65°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 35° and 45°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  35. 35.An angle measures 40°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  36. 36.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  37. 37.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. 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 15°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?

Answer key

  1. 80
  2. Acute
  3. 150
  4. 90
  5. 190
  6. 90
  7. 60
  8. Straight
  9. 120
  10. 30
  11. 60
  12. 60
  13. 160
  14. Acute
  15. 25
  16. 95
  17. 180
  18. 50
  19. Right
  20. 50
  21. 150
  22. 10
  23. 65
  24. 75
  25. 150
  26. 100
  27. 15
  28. 110
  29. Acute
  30. 55
  31. 100
  32. 160
  33. 40
  34. 30
  35. Acute
  36. Obtuse
  37. 120
  38. 35
  39. 165
  40. 90

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