Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 56
itecture. Figs. 87, 88, 89, and 90 belong to the earlier periods ofGothic, while Figs. 91 and 92 represent those of a later period. CHAPTEE III POLYGONS Regular Polygons are figures that have equal sides and equalangles. To construct a regular polygon, we must have the lengthof one side and the… … Fig. 93. all its sides in one direction only, Fig. 93, we shall find that thetotal of all the exterior angles, shown by the dotted curves, isequal to 360°, or four right angles; and if we join each angleof the polygon to any point in its centre, the sum of theangles at this point will also be 360°,…
Geometrical drawing
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