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Published online by Cambridge University Press: 20 January 2009
§ 1. To inscribe in a triangle ABC a triangle similar to the triangle DEF, and having its sides parallel to those of DEF.
In order to inscribe in the triangle ABO (fig. 21), a triangle having its sides parallel to those of DEF, through D, E, F, draw lines parallel to the sides of ABC, and then reduce the figure A′B′C′ in the ratio BC : B′C′.