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 66
n from the centre perpendicu-lar to DC, DC is bisected in E (III. 3), therefore (III. 35) therectangle AE. EB equals the rectangle DE . EGy that is, thesquare on DE or AC. Similarly the rectangle AF. FB equals the square on HF orAC. See (47). Cor. Hence, if a perpendicular be drawn from any point… … 38 EXERCISES ON EUCLID [60.
Geometry
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