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bisecting lines a line be
Let ABC be a A; bisect
(Depending on Prop. XIV. XXVI. XLVII.) PROP. N.
THEOR.-If from any point within or with-
Let abcd be the figure ;
FB? + KD2 + c +
(Deducible from Prop. XLVII.) PROP. p. THEOR.-If, in the figure to Prop. XLVII., CF, BK be joined, they will intersect AL, the perpendicular to bc, in the same point.
(See Prop. F.) PROP. O. THEOR.-If, in the same figure, perpendiculars be drawn from the points F, K, to bc produced, the line intercepted between B and the perpendicular from F will be equal to the line intercepted between c and the perpendicular from K; and the sum of these lines will be equal to Bc.
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