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 113
108 GEOMETRY. … QUERY DC. If a straight line is drawn per-pendicular to the extremity A, ofthe radius AC, in how manypoints will that line meet the cir--cumference of the circle 1 A. In one only (namely, thepoint A) ; and therefore the lineDE is a tangent to the circle.(See Def. page 15.) Q. But why can the line…
Geometry, Plane
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