A treatise of algebra: wherein the principles are demonstrated ... To which is added, the geometrical construction of a great number of linear and plane problems .. (1809)
Simpson, Thomas, 1710-1761, Palmer (T. & G.) Philadelphia. (1809) bkp CU-BANC, Carey, Mathew, 1760-1839 · Philadelphia, Printed for M. Carey by T. & G. Palmer · leaf 406
vertical angle being groen^ to determine the triangle. CONSTRUCTION. Upon the indefinite line FEQ erect the given perpen-dicular DC, making the angle DCE = half the givenangle; let EF, expressing the given difference of thesides, be bisected by the perpendicular GI, meetingEC in I; also let EC be… … draw EM, maHnrv +1,1^ ^o DEC, and cuui., CB rS? tt^M^EF apply CA =CM, so shall ACB be the tir^ >^q^^recl. Upon EM le^ ^-^ ^^^ perpendicular CN, andjoin L, M, p.id F. J» Now, LB^ = EK^ C^^y ---^truction) ^MTCm. X HK — f^ V^^^^- ^- ^0 ==inriTcH N> HL — HK 0>«/ construction) = CL X EL;whencf-…
Algebra · Geometry
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