Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 45
having an even number ofsides, the lines containing the angles of the polygons form diagon-als of the figure, as in the square. 34 FREEHAXD DKA^YIXG 25 In polygons having an odd number of sides, the lines con-taining the angles of the polygon are perpendicular to the sidesopposite the angles, as in…
Architecture · Building · Carpentry
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