The first six books of the Elements of Euclid, in which coloured diagrams and symbols are used instead of letters .. (1847)
Euclid, Byrne, Oliver · London, W. Pickering · leaf 293
N equal circles ( 00 ), angles, whether at the centre or circumference, arein the fame ratio to one another as the arcs on which they Jland (fo alfo are feci or s. L:4-.- ) i o Take in the circumference of | I any number of arcs «■—» , — , &c. each 35 ■— ? and alfo inthe circumference of I take… … radii to the extremities of the equal arcs. Then fince the arcs 9 ■-• . ■—■-, &c are all equal,the angles # , W , \, &c. are alfo equal (B. 3. pr. 27); .*. mwk is the fame multiple of 0 which the arcis of ««; and in the fame manner 4B^ 4. is the fame multiple of ml , which the arc…
Geometry
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