Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 94
; 11. a. ,*. sum of these eight rectangles =four times the sum of AG, CK= four times AK= four times rect. AB, BC.Then four times rect. AB, BC and sq. on AC= 5um of the eight rectangles and XH= AEFD— sq. on AD. q, r. d. Cook il.j PROPOSITION IX. a? Proposition IX, TiiEOREii. If a straight line be… … Let AB be divided equally in C and unequally in D.Then must<um of sqq. on AD, DB=twice sum of sqq. on AC, CD.Draw CE^AC at rt. z s to AB, and join EA, EB.Draw DF at rt. z s to AB, meeting EB in F.Draw EG at rt. z s to EC, and join AF.Then -. i ACE is a rt. z ,.-. sum of z s AEC, EAC=a. rt. z…
Geometry
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