| Leonardo
da Vinci |
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| The
two squares, the drawn and |
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| the
projection square, form an |
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| octagram
Pell's series are the |
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| progressions
that approximate the |
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| geometry
of proportions originating |
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| from
the octagram The first of Pell's |
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| series is: |
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| 1
2 5 12
29 70 169 ... |
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| Both
main numbers 24 (2x12) and |
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| 29
are members of this series. |
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| Leonardo
used this progression to |
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| rationalise
irrational geometry of |
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| square
root of 2 that rules the |
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| geometry
of the octagram. |
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