Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 267
is thesupplement of the angle at the center. Ex. 993. Find the number of degrees in the angle at the center of aregular octagon. Find the number of degrees in an angle of the octagon. Ex. 994. If the circle circumscribed about a triangle and the circleinscribed in it are concentric, the triangle is…
Geometry, Plane · Geometry, Solid
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
