The first six books of the elements of Euclid, in which coloured diagrams and symbols are used instead of letters for the greater ease of learners (1847)
Byrne, Oliver, Whittingham, Charles, 1795-1876, Chiswick Press · London : William Pickering · leaf 127
= i (B. 3-pr-3-) = — (hyp.) and (B. I. def. 15.) and but fince >- s^ is a right angle = + MB.i.pr.47-) . = + ^ for the .% -^ + fame reafon. BOOK III. PROP. XIV. THEOR. 93 Alfo, if the lines 1 ..■.•»■ and •—i»«...«.r be equally diflant from the centre; that is to fay, if the per-pendiculars… … but HE diameter is the greatejl Jiraightline in a circle : and, of all others,that which is neareji to the centre isgreater than the more remote. FIGURE I.The diameter ^^ is CZ any line For draw and •••••••••• Then .••■>••»■■> ^ ^—^._iand •^—^— = ——— . mXm ■■■■•»««» ^^ ■■■•■■•■• (B. I. pr.…
Euclid's Elements · Geometry
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