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 80
s, is measured hy half thedifference of the arcs included between its sides. Let AB, AC, hQ two secants: then wll the angle BACbe measured by half the difference of the arcs BEC andDF. Draw DE parallel io AC: thearc EC will be equal to DF (p.10), and the angle BDE equal tothe angle BAC (b. l, p.… … 76 GEOMETRY PEOPOSmOX XXT. TITEOEEM. Any angle formed hy a tangent and a chord passing through the point of contact, is measured by half the arc included between its sides. Let BE be a tangent, and AC a chord. From A, the point of contact, drawthe diameter AD. The angle BAB isa right angle (p. 9),…
Geometry · Trigonometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
