A new formula concerning the diagonals and sides of a quadrilateral - Larry Hoehn

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    A new formula concerning the diagonals and sides of a quadrilateral - Larry Hoehn​

    We derive a formula relating the sides and diagonal sections of a general convex quadrilateral along with the special case of a quadrilateral with an incircle.

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    LTTK CTV, 9/10/19
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