An elementary treatise on geometry : simplified for beginners not versed in algebra (1833)
Grund, Francis J. (Francis Joseph), 1805-1863 · Boston : Carter, Hendee & Co. · leaf 32
lation exists be- ^tween these two lines ? A. Tliey are parallelto each other. Q. How can you proveit by this diagram ? The line IF is bisected in O, andfrom that point O, a perpendicular OP is let fall upon theline AB, and afterwards extended until, in the point R,it strikes the line CD. A. I… … Ji6P GEOMETRY. Q. Which is that side, and which are the two adjacentangles ? A. The side 01, which is equal to OF; because thepoint O bisects the line IF. One of the two adjacentangles is the angle lOR, which is equal to the angle FOP ;because these angles are opposite at the vertex : andthe other…
Geometry, Plane
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