Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 455
Given isosceles A AOB with base AB and altitude OE, a str.line XY lying in the plane of A AOB passing through 0 andnot intersecting the surface of A AOB, and CD the projectionof AB on XF; let the area of the surface generated by AB bedenoted by area AB. To prove area AB=CD2 ttOE. I. If AB is not 1!…
Geometry, Plane · Geometry, Solid
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