Elementary plane geometry : inductive and deductive / by Alfred Baker (1903)
Baker, Alfred, 1848-1942 · Toronto : Gage · leaf 126
ofconsecutive radii boundingthese angles j or, perhapsmore conveniently, we mayproceed as follows : Draw twodiameters at right angles toone another and join theirextremities. VVe thus have asquare in the circle. Through the centre, usingparallel rulers, draw diameters parallel to the sides ofthe… … Regulae Polygons. 123 of tlie construction may be tested by using the dividers to determine whether the sides are equal, and the bevel to determine whether the angles areequal. Each of the angles at the centre is 45. Henceeach of the angles at the base of any of the isoscelestriangles, OAB, OBC,…
Geometry, Plane
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