Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 69
68 GEOMETRY Problems Sch. If we bisect the arcs AB,BC, CD, DA. and join the points,we shall have a regular octagon in-scribed in the circle. If we againbisect the arcs, and join the points ofbisection, we shall have a regularpolygon-of sixteen sides. ^ … PROBLEM XXIII.To describe a square about a given liiclc. Praw the diameters AB, DE, atright angles to each other. Throughthe extremities A and B draw FA Gand HBI parallel to DE, and throughE and D, draw FEH and GDI par-allel to AB: then will FGIH be therequired square. For,.since ACDG is a…
Geometry · Plane trigonometry
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