Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 76
al AD should suggest anisosceles A of which BD will be the base and of which it is required to findthe vertex. But the ± bisector of the base of an isosceles A passesthrough the vertex. Therefore, the solution is completed by drawing the ±bisector of BD^ which determines A^ and by drawing AB and… … PARALLEL LINES 177. Def. Two lines are parallel if they lie in the same planeand do not meet however far they are prolonged either way. 178. Assumption 19. Parallel line postulate. Two intersect-ing straight U)ies cannot both be par all el to the same straight line, 179. The following form of thjs…
Geometry, Plane · Geometry, Solid
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