The elements of Euclid for the use of schools and colleges; comprising the first six books and portions of the eleventh and twelfth books; (1903)
Euclid, Todhunter, I. (Isaac), 1820-1884, ed. edt, Simson, Robert, 1687-1768, ed. edt · London; New York, Macmillan · leaf 382
iangle :prove that the arcs of the folded segments all pass tlirough a fixed point. T.L.E. 2 a XXXVlll EUCLIDS ELEMENTS. 49. If from any point in the circumference of the circle described rounda triangle perpendiculars he drawn to the sides of the triangle, the threepoints of intersection are in… … [We will suppose that P is on the arc cut off by AB, on the oppositeside from C, and that E is on CA produced through A ; the demon-stration will only have to be slightly modified for any other figure.] [III. 22 converse. [III. 2L[I. 13. [IIL 22. [IIL 2L[III. 22 converse. A circle will go round…
Euclid's Elements · Geometry · Mathematics, Greek
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