Mellificium mensionis, or, The marrow of measuring : wherein a new and ready way is shewn how to measure glazing, painting, plaistering, masonry, joyners, carpenters, and bricklayers works : as also the measuring of land, and all other superficies, and solids, by vulgar arithmetick, without reducing the integers into the least denomination, giving the content of any superficie or solid, consisting of feet, inches, and parts of inches, in a fourth part of the time and labour required by the usual way in vulgar arithmetick : together with some choice principles and problems of geometry conducing thereto : to which is added, an appendix, left under the author's own hand, the contents of which, see in the next page : illustrated with copper cuts the like not heretofore published ... (1727)
Mandey, Venterus, Hobbes, Thomas, 1588-1679, Tebb, Thomas, King, Thomas, Illidge, Samuel, White, Robert, 1645-1703 · London : Printed for Tho. Tebb ... Sam. Illidge ... and Tho. King ... · leaf 136
88 GEOMETRICAL Book II. PROP. XVII. ft he Side of an Icofahedron is equal to the third Part of the greatefi Semicircle in its own Sphere . DEfcribc the Quadrate A BCD, and divide it in the Middle by the right Line EF parallel to the Sides AB, DC ; alfo deferibe a Quadrant ABD, whole Arch will cut… … being produced to BC in P. Then is BP a Tangent of 30 Degrees, to which add P b equal to the Side BC, the whole Line B h will be compounded of the Side, and a Tangent of 30 Deg. Likewife draw the Diagonal
Measurement · Geometry
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