Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 58
eDAC (Bk. I. Th. viii), and consequently, DA is perpendicu-lar to BC. (Bk. I Def. 21). SECOND METHOD. WAen the point A is near the extremity of the line. Assume any centre, as P, out ofthe given line. Then with P as acentre, and radius from P to A, de-scribe the circumference of a circleThrough C,… … 58 GEOMETRY Problems
Geometry · Plane trigonometry
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