Elementary plane geometry : inductive and deductive / by Alfred Baker (1903)
Baker, Alfred, 1848-1942 · Toronto : Gage · leaf 76
ar to OA,the parts EF, FG are equal.Measurement will establish theequality of these parts. Or wemay ^;rc>ie it thus: The rt. L^^^ at F are equal. Because OE = OG, .-. L OEF=ZOGF. Hence L ^^s at 0 are equal. Also sides EO, OF-sides GO, OF. .-. (Ch. III., 2) EF = FG. And hence all chords… … The Circle, Its Symmetry, Tangents, Etc. 73 also. Thus the line TAP, through A parallel to BCD,while it touches the circle, does not cut it. Sucha line (TAP) is called the tangent to the circle at A.That is to say, a tangent is a line drawn throughthe extremity of a diameter, and at right anglesto…
Geometry, Plane
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