Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 129
I. Given equal circles 0 and Q, with equal chords AB and CDTo prove AB = CD, Argument 1. Draw radii OA, OB, QC, QD, 2. In A OAB and QCD, AB = CD. 3. OA = QC and OB = QD. 4. .-. A OAB = A QCD. 5. .-. Z 0 = Z Q. 6. .-. AB = CD. Q.E.D. Reasons 1. § 54, 15. 2. By hyp. 3. § 279, b, 4. §116. 5. §110. 6.…
Geometry, Plane · Geometry, Solid
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