Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 20
ven stmight line an isosceles triangle, whose equal sidesshall be each equal lo anuther given strai;.^ * ^•w Bool£ I.] PROPOSITION IV. Proposition IV. Theorem. If two triangles hare tiro sides of the one equal to two sidesof ike other, eavh to each, and have likewise the angles containedby those… … 0 I A /---^ D C ^ J? In the A s ABC, DEF,let AB^DE, and AC=DF, and z BAC= l BDF.Then must BC=EF and A ABC = a DEF, and the otherL s, to which the equal sides are opposite, must be equal, thatis, L ABC= L DEF and l ACB= l DFE. For, if A ABC be applied to A DEF,so that A coincides with D, and AB…
Geometry
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