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 370
Let the chords AB and CD, produced, meet in E ; join AD.The z ADC = the z« EAD, AED, [I. 32. that is, zAEC = difference of the z« ADC, BAD, that is, = z at circumference standing on the difference of the arcs AC, BD,and .-. = Z at centre standing on half the difference of these arcs. XXVI EUCLIDS… … radii of the given circles, describe a circle ; from B draw a tangentBC to the circle so described. Join AC and produce it to meet the circumference at D.Draw the radius BE parallel to AD, and on the same side of AB ;and join DE. Then DE shall touch both circles. For BE and CD are equal and…
Euclid's Elements · Geometry · Mathematics, Greek
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