Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 73
D. Ex. 1. AD is parallel to BC; AC, BD meet in E; BC isproduced to P so that the triangle FEB is equal to thetriangle ABC : shew that PD is parallel to AC. Ex. 2. If of the four triangles ^to which the diagonalsdivide a quadrilateral, two opposite ones are equal, the quad-rilateral has two opposite… … Let the equal A s ABC, DBF be on equal bases BC, EFin the same st. line BF and towards the same parts.Join AD. Then mmt AD he || to BF. For if not, through A draw ^ 0 || to BF, so as to meet ED,or ED produced, in 0, and join OF. Then a ABC= a OEF, . they are on equal bases andbetween the same lis.…
Geometry
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