Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 131
rejoined, an inscribed rectangle will be formed. Under what conditionswill t\ e rectangle be a square ? Ex. 421. State the theorems which may be used in proving arcs equalState the theorems which may be used in proving chords equal. 120 PLANE GEOMETRY Propositiox IV. Theorem 301. In equal circles,… … I. Given circle 0, with chord AB > chord CD,To prove AB > CB, Argument 1. Draw radii OA^ OB, OC, OD, 2. In A OAB and OCD, OA = OC, OB = OD. 3. Chord AB > chord CD. 4. .-. Zl > Z2, 5. ,\ AB > CD. Q.E.D. II. Conversely: Given circle 0, with AB > CD.To prove chord AB > chord CD.…
Geometry, Plane · Geometry, Solid
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