Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle, and the geometry of solids : to which are added, Elements of plane and spherical geometry (1826)
Playfair, John, 1748-1819, Euclid · Philadelphia : Marot & Walter · leaf 207
it has the angle EGH a right angle, iherefore it is arectangle, and is equal totlie rectangle AH, because EG is equal toAG. Therefore, when in the revolution of the rectangle AH, thestraight line AG coincides with EG, the two rectangles AH and EHwill coincide, and the straight line AD will coincide… … OF GEOMETRY. BOOK lU.PROP. XVII. THEOR. 207 A cylinder and a parallelopiped having equal bases andaltitudes, are equal to one another. Let ABCD be a cylinder, and EP a parallelopiped having equalbases, viz. the circle AGB and the parallelogram En, and having ilsoequal altitudes; the cylinder ABCD…
Euclid's Elements · Geometry · Trigonometry
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