The American house-carpenter; a treatise on the art of building, and the strength of materials (1873)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 51
gles to a <?, draw lines to the opposite part of the circle \this will give the remaining points for the polygon, as £,/, &c.In forming a hexagon, the sides of the triangle erected upona c, (as at Fig. 59,). mark the points 5 and /. This method oflocating the angles of a polygon is an… … Fig 61. Fig. 62. Fig. 63. 98.— Upon a given line to describe any regular polygon.Let a J, (Fig. 61, 62 and 63,) be given lines, equal to a side ofthe required figure. From 5, draw b c, at right angles to a o /upon a and I, with a o for radius, describe the arcs, a c d andfe b £ divide a c into as…
Carpentry · Architecture
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