The 15. Theoreme. The 15. Proposition. Like partes of multiplices, and also their multiplices compa∣red together, haue one and the same proportion.
SVppose that AB be equemultiplex to C,
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SVppose that AB be equemultiplex to C,
to LE. Wherefore (by the 12. of the fift) as one of ye antecedentes is to one of the consequentes, so are all the antecedentes to all the consequentes. Wherfore as AG is to DK, so is AB to DE. But AG is equall vnto C, and likewise DK to F. Wherefore as C is to F, so is AB to DE. Like partes therefore of multiplices and also their multiplices compared together, haue one and the same proportion that their equemultiplices haue: which was required to be demonstrated.
Construction.
Demonstra∣tion.