Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 41
40 GEOMETRY Definitions 12 A secant is a line which meets thecircumference in two points, and liespartly within and partly without theThus A B is a secant. circle. 13. A tangent is a line which hasbut one point in common with the cir-cumference. Thus, CMB is a tangent. \ … 14. Two circles are said to toucheach other internally, when one lieswithin the other, and their circumfe-rences have but one point in common.
Geometry · Plane trigonometry
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