Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 39
4. Any portion of the circumference,as EFG, is called an arc. 5. A straight line, as EG, joining tho^extremities of an arc, is called a chord. 6 A segment is the surface or portionof a circle included between an arc andits chord. Thus EFG is a segment. … BOOK II. 3^ Definitions 7. A sector is tue part of the circle in-cluded between an arc and the two radiidiawn through its extremities. Thus.CAB is a sector 8. A straight line is said to be in-scribed in a circle, when its extremitiesare in the circumference. Thus, theline AB is inscribed in a…
Geometry · Plane trigonometry
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