The elements of Euclid : viz, the first six books, together with the eleventh and twelfth : the errors, by which Theon, or others, have long ago vitiated these books, are corrected, and some of Euclid's demonstrations are restored : also, The book of Euclid's data, in like manner corrected (1834)
Euclid, Euclid, Simson, Robert, 1687-1768 · Philadelphia : Desilver & Thomas · leaf 58
ight lines drawn fromany point in the circumference of thesegment, to the extremities of thestraight line which is the base of thesegment. And- an angle is said to insist or standupon the circumference intercepted be-tween tlic straight lines that containthe angle. X. The sector of a circle is the…
Mathematics, Greek · Geometry · Trigonometry
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