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105.47 On a synthetic proof for the conic sections orthoptics

Published online by Cambridge University Press:  13 October 2021

Dario Pellegrinetti
Dario Pellegrinetti*
Affiliation:
Kirchstr. 16, 64283, Darmstadt, Germany, e-mail: [email protected]
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The Mathematical Gazette , Volume 105 , Issue 564 , November 2021 , pp. 533 - 538
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Copyright
© The Mathematical Association 2021

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References

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