An elementary treatise on geometry : simplified for beginners not versed in algebra (1833)
Grund, Francis J. (Francis Joseph), 1805-1863 · Boston : Carter, Hendee & Co. · leaf 123
he triangles ABO, BCO, CDO, &,c., areall similar to the triangles MNO, NPO, PQO, &i.c., fromwhich they may be considered as cut off, by the linesAB, BC, CD, &LC. being drawn parallel to the sides MN,NP, PQ, &c. (auery 16, Sect. II.) Now, as the trian-gles ABO, BCO, CDO, 6lc., are… … QUERY XIX. It has been proved (Query 16,Sect. IV.), that a regular poly-gon^ of any number of sides,may be inscribed in a circle, bydividing the circumference of thecircle into as many equal partsas the polygon shall have sides,and then joining the points of division by straight lines :can you now…
Geometry, Plane
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