A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 209
edral of theother, and similarly placed, the prisms are equal, Dem.—In the prisms AfZ, and kd,let ABCDE equal ABCDE, fKBba =ABba, and BCcb = BCcb; then arethe prisms equal. For, since the facial angles of thetriedrals B and B are equal, the trie-drals are equal {451), and being ap-plied they will… … OF PRISMS. 189 and Vc in he, the upper bases, which are equal because equal to the equal lowerbases, will coincide. Therefore the remaining edges will have two points com-mon in each, and will consequently coincide. 467* Cor. 1.— Two right prisms having equal bases and equalaltitudes are equal. If…
Geometry · Trigonometry
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