Elementary plane geometry : inductive and deductive / by Alfred Baker (1903)
Baker, Alfred, 1848-1942 · Toronto : Gage · leaf 63
C can, by a sectionalong HK, be converted into the parallelogram LBCK,whose altitude is half that of the triangle. Hence theparallelograms DBCF, LBCK, being on the same baseand with equal altitudes, are (Ch. ^T^II., 1) equal inarea. Hence the triangles are equal in area. The parallelograms DBCF,… … 60 Geometry.
Geometry, Plane
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