Elements of geometry : containing books I to III (1886)
Smith, J. Hamblin · Toronto : W.J. Gage · leaf 142
t;■ !•■From /> and /.. the middle pts. of .l/;,.ti.l Bdraw DO, . l 9 to J/;. /•. mei Thm v .1/; is I be a chord of the • , .-. ci Qtre of the • lies in DO ; III. 1 and . /<■ ia to be a chord of the ■ . .• . entre of the • lies in /. . Ill 1. Hence 0 ia the centre of the • of which I BC ia… … Let ABC be the given A. It is required to describe a 3 about the A. From D and /•.. the middle pts. of AB and AG, draw DO,EO, _ S to Al>. A(. and let them meet in 0. Then . AB is to be a chord of the 0, .. centre of the • lies in DO. III. 1. And . At is to be a 1 hord of the • . .-. centre of…
Geometry
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