Gore, James Howard, 1856-1939 · New York, Longmans, Green, and co. · leaf 140
he angle at the centre 2. Show that the radius drawn to any vertex of a regular polygonbisects the angle at that vertex. 3. Show that if the circumference of a circle be divided into any num-ber of equal arcs, the tangents at the points of division form a regularpolygon circumscribed about the… … The sum of the anglesof the one polygon is (by123) equal to the sum ofthe angles of the other;then since the number of angles are the same in both, eachangle of the one will be equal to the corresponding angle ofthe other. Therefore they are mutually equiangular. The polygons being regular, AB = BC…
Geometry
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