Exercises on Euclid and in modern geometry for the use of schools, private students, and junior university students (1881)
McDowell, James L · Cambridge, Deighton, Bell, and Co. · leaf 65
reas equal to half the quadrilateral ABCD. Q. e. d. 56. Through a given point within a circle, draw theminimum chord. Let P be the given point within the circle whose centre is 0.Draw the diameter CD, and through Pdraw the chord AB perpendicular to CD.AB is the minimum chord, for through Pdraw any… … 57. Through a given point within a circle to draw achord of a given length, but which must not be less thanthe minimum chord through the point, nor greater than thediameter. In the given circle with centre 0 place any chord AB of thegiven length, draw OE perpendicular to it,and with the centre 0…
Geometry
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-95-69.webp)
