required also as much force todeflect it to agiven angle as a hard one of thesame dimensions. A soft bar, a spring tem-pered, and a hard one, were bended to equalangles by five pounds; with six the hard barbroke, with seven the soft one bended, butreturned as far from its new position, uponthe… … Bisect A B in c. Draw c d perpendicular toA B. From A or B as a centre, and with thelength A B, cross c d in e ; and from e, withE A as radius, describe the arc a d ; then thepoint D will be the centre of the polygonrequired. PROBLEM XXVIII, To find the angles at the centre and circum-ference of a…
Design · Decoration and ornament · Art
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