Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 185
. A line can be divided at but one point into segments whichhave a given ratio (measured from one end). Ex. 652. A line parallel to the bases of a trapezoid divides the othertwo sides and also the two diagonals proportionally. Ex. 653, Apply the proof of Prop. XI to the case in which the par-allel… … R Given lines a, b, and c. To construct the fourth proportional to a, 6, and c. I. Construction 1. From any point, as R, draw two indefinite lines ES andRT. 2. On RS lay off RM = a and ML = b. 3. On RT lay off RF = c. 4. Draw MF. 5. Through L construct LG 11 MF. § 188. 6. FG is the fourth…
Geometry, Plane · Geometry, Solid
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