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Elements of plane and solid free-hand geometrical drawing, with lettering; and some elements of geometrical ornamental design, including the principals of harmonic angular ratios, etc. In three parts ... for draughtsmen and artisans; and teachers and students of industrial and mechanical drawing (1878)

Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 35

An illustration from Elements of plane and solid free-hand geometrical drawing, with lettering; and some elements of geometrical ornamental design, including the principals of harmonic angular ratios, etc. In three parts ... for draughtsmen and artisans; and teachers and students of industrial and mechanical drawing, 1878, leaf 35
ntre to the circumference of a circle,is called its radius. The distance across the circle, through itscentre is its diameter. Parallel circles have the same centre, and are called con-centric. A portion of the circumference of a circle, is calledan arc. Ex. 58. Draw circular arcs in various… … 22 FREE-HAND GEOMETRICAL DRAWING. Division of Circles. Circles, or arcs, may, like straight lines, have given distancesmarked off upon them, and may be divided into equal parts. The line which joins the extremities of an arc, is called thechord of that arc. When the arc is very short, its length…

Geometrical drawing · Mechanical drawing

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