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Drawing a circle with a rectangular piece of paper
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Drawing a circle with a rectangular piece of paper

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You don't need a compass or a ruler to draw a circle, just a rectangular piece of paper and a pencil.

You don't need a compass or a ruler to draw a circle, just a rectangular piece of paper and a pencil.

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Drawing a circle with a rectangular piece of paper Presentation Transcript

  • 1. Drawing a perfect circle with just a pen and a sheet of paper.
  • 2. Draw two dots.
  • 3. Draw two dots.
  • 4. Draw two dots.
    This will be the diameter of the circle.
  • 5. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 6. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 7. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 8. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 9. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 10. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 11. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 12. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 13. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 14. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 15. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 16. Using the first two dots as guides, draw extra dots at the corner of the sheet of paper, as shown.
  • 17. Join the dots.
  • 18. This technique emerges from the property of circles, that an angle at the centre of a circle is double the angle at the circumference.
    90O
    180O
  • 19. This technique emerges from the property of circles, that an angle at the centre of a circle is double the angle at the circumference.
    90O
    180O
    A
    2A
  • 20. END