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 371
chord DE of the circle be drawn so that, produced if necessary, it maypass through B. Let P be the middle point of this chord, so that Pis a point on the required locus. Since P is the middle point of the chord DE, .-. zAPE, that is z APB, is a right z, [III. 3. .-. P is on a circle of which AB is…
Euclid's Elements · Geometry · Mathematics, Greek
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