Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 196
§410. 3. § 190. 4. §189. 5. Bv hvp. 6. § 54, 1. 7. § 162. 8. §309. BOOK IIT 185 Ex. 685. The sides of a triangle are 8, 12, and 15. Find the seg-ments of side 8 made by the bisector of the opposite angle. Ex. 686. In the triande of Ex. 685, find the segments of sides 12 and15 made by the bisectoi*s… … Given A ABC^ with BP the bisector of exterior Z CBF,To prove AF \ PC — AB \ BC. Argument1. Through C draw CE II PB, meeting ABat E.Then in A ABP, AP : PC = AB : BE. 2.3.4.5. 6. 7.8. Now AndBut AP Z3 = Z1.Z4 = Z2.Zl =Z2.Z3 = Z4. . BC= BE.: PC = AB : BC.Q.E.D. Reasons 1. §179. 2. §409. 3. §190. 4. §…
Geometry, Plane · Geometry, Solid
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