Text-book of Euclid's elements for the use of schools : books I - VI and XI (1900)
Hall, H. S. (Henry Sinclair), 1848-1934, Stevens, F. H. (Frederick Haller), 1853-1933 · MacMillan : London · leaf 361
duced meet at F,shew that AB : AC :: EF : DF. 11. Find a point the perpendiculars from which on the sides ofa given triangle shall be in a given ratio. 340 eucltds elements. Proposition 7. Theorem. If two triangles have one angle of the one equal to one angleof the other, and the sides about one… … Let ABC, DEF be two triangles having the L ABC equalto the L DEF, and the sides about the angles at A and Dproportional, namely BA : AC :: ED : DF. Then shall the ls ACB, DFE be either equal (as in Figs. 1 and 2)or supplementary (as in Figs. 1 and 3), and in the formercase the triangles shall be…
Geometry · Mathematics
Internet Archive · UBC Library · Public Domain Mark 1.0. Free to use for anything.
