The art of fortification, or architecture militaire as vvell offensiue as defensiue, compiled & set forth, by Samuell Marolois revievved, augmented and corrected by Albert Girard mathematician: & translated out of French into English by Henry Hexam

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Title: The art of fortification, or architecture militaire as vvell offensiue as defensiue, compiled & set forth, by Samuell Marolois revievved, augmented and corrected by Albert Girard mathematician: & translated out of French into English by Henry Hexam
Author: Marolois, Samuel.
Publication: Printed at Amsterdam :: For M. Iohn Iohnson,; Anno 1631.
Rights/Permissions: To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
Subject terms: Fortification -- Early works to 1800.
Cite this Item: "The art of fortification, or architecture militaire as vvell offensiue as defensiue, compiled & set forth, by Samuell Marolois revievved, augmented and corrected by Albert Girard mathematician: & translated out of French into English by Henry Hexam." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A07035.0001.001. University of Michigan Library Digital Collections. Accessed May 2, 2024.

Pages

The 30. Figure.

In this Decagone, let the curtaine be 36 rod, and the flanke 12, the face 24, and the reason of the Bulwarke in the flanking interiour, as 58 to 19.

THe halfe of 58 is 29, then the angles ADG to AGD, or CDF, wilbe as 29 to 19, therefore setting downe ADF to CDF, it wilbe as 48 to 19; but ADF is 72 de∣grees, then CDF wilbe 28 ½ degrees, & then the angle flanked 87 degrees, the rest is easie, for the triangles DCF, CBG will make knowne CF, FD; DG is 49, 14888, DH 61, 68324; DP 78, 18336, AD 24, 52336.