Gore, James Howard, 1856-1939 · New York, Longmans, Green, and co. · leaf 27
hypothe-sis, and CD remains stationary, the point A will fall on B, andthe line CA will fall on CB, and be equal to it. Hence CA = CB. Q.E.D. 54. COR. 1. Since D is the middle point of AB, DC aperpendicular, and C any point on this perpendicular, it istrue that every point on the perpendicular… … that is, the two equal oblique lines drawn from the same pointin the perpendicular make equal angles with the perpendicularand also with the base. 56. COR. 3. If two 2ioints on a line are equally distant fromthe extremities of another line, the first line is a perpendicularbisector of the second.…
Geometry
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