Elements of geometry and trigonometry. Revised and adapted to the course of mathematical instruction in the United States (1856)
Legendre, A. M. (Adrien Marie), 1752-1833, Davies, Charles, 1798-1876 · New York : A.S. Barnes · leaf 63
)()int where the tangent touches the circumference,is called the j^^^d of contact. 10. Two circumferences tonch eachother when they have but one point incommon. The common point is calledthe point of tangtncg. 11. A polygon is circumscribed about acircle, when each of its sides is tangent tothe… … POSTULATE. 12. Let it be granted that the circumference of a circlemay be described from any centre, and with any radius. BOOK III, 59 PEOrOSITION I. THEOREM. Every diaraeter divides the circle and its circumference each intotwo equal 2>ci^ts. Let AEBF be a circle, and AB a, diameter. ISTow,…
Geometry · Trigonometry
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