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QUADRILATERAL

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Originally appearing in Volume V22, Page 707 of the 1911 Encyclopedia Britannica.
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QUADRILATERAL , in See also:

geometry, a figure enclosed by four straight lines. It is also a military See also:term applied to a See also:combination of four fortresses mutually supporting one another. The fortresses of See also:Namur, See also:Liege, See also:Maastricht, and See also:Louvain, and also those of See also:Silistria, See also:Rustchuk, See also:Shumla, and See also:Varna, were so called. But the most famous quadrilateral was that of the four fortified towns of See also:north See also:Italy—See also:Mantua, Peschiera, See also:Verona, and See also:Legnago, A the two former of which are situated on the Mincio and the two latter on the See also:Adige. The real value of the quadrilateral, which gave See also:Austria such a See also:firm hold on See also:Lombardy, See also:lay in the See also:great natural strength of Mantua and in the readiness with which troops and supplies could be poured into Verona from the north.

End of Article: QUADRILATERAL

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