Advanced geometry for high schools : synthetic and analytical (1919)
McDougall, A. H. (Alexander Hiram), 1859-1946 · Toronto : Copp, Clark · leaf 90
. lines AD, AG. Prove that BE, CF, DG areconcurrent. P) 31. Three circles pass through two given points P, Q.Two st. lines drawn from P cut the circumferences againat R, S, T and R, S, T. Show that RS : ST = RS: ST. (Note.—Join the six pcints to Q.) 32. The middle points of the diagonals of a… … 33. ABCD is a quadrilateral and O is a poisuch that A AOB + A COD = A BOC + Athat the locus of O is the st. line joiningpoints of the diagonals AC and BD. (Note.—Produce DA. CBto meet at E. Make EF =AD and EG = BC. JoinFO, EO, GO, FG.) A OEF = A OAD, A OEG =A OBC. ;. OF EG - halfABCD, and A EFG is…
Geometry · Geometry, Analytic
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