This work illustrates and describes 14 parts of a circle: arc, chord, diameter, radius, circumference, area, segment, sector, tangent, secant, external, internal, concentric, and annulus.
There are two styles of books included. Style one is approx. 3¾" x 5", style two is approx. 5½” x 5½“ and requires little preparation.This file is in PDF format.