h pair of opposite sides isequal to two right angles. IB. Find the locus of the extremities of tangents of fixed lengthdrawn to a given circle. 14. In the diameter of a circle produced, determine a point suchthat the two tangents drawn from it may contain a given angle. 188 Geometry. Proposition… … Let ACB be a tangent to the circle CDE at the pt.C, and let the chord CD be drawn, dividing tlie circleinto segments in which are the ^s DFC, DEC.Then ^DCB=ZDEC, and z.DCA=_DFC. Produce CF to G. Then Ls DEC, DFC together = 2 rt. Zs. Also Zs DFG, DFC together = 2 rt. Ls; .. ZDFG=zlDEC. Let now F…
Geometry · Geometry, Plane
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