Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 82
A 1 and 2. j^f To prove Z1 + Z 2 = 2 rt. A Argument Only 1. ZH-Z3 = 2rt. A 2. Z3 = Z2. 3. .-. Zl + Z2 = 2rt. A Q.E.D. 193. Cor. IV. A straight line perpendicular to one oftwo parallels is perpendicular to the other also, 194. Cor. V. (Opposite of Cor. Ill of Prop. XXII).// two straight lines are… … 72 PLANE GEOMETRY 195. Cor. VI. Tivo lines perpendicular respectively totwo intersecting lines also intersect. Given two intersecting lines AB Aand CD, and BE ± AB, CF ± CD, To prove that BE and CF alsointersect. 1.2. 3.4.5. 6. Argument Only Draw CB,Z.FCD is a rt. Z. .-. Zl < a rt. Z. Likewise…
Geometry, Plane · Geometry, Solid
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