Example of "Polygon"

Example 1: Polygon based on a base line and direction point

(A) Base line
(B) Direction point

Example 2: Polygon with even number of vertexes based on a center and corner or width over flats

(A) Corner
(B) Width over flats
(C) Center

Example 3: Polygon with off number of vertexes based on a center and corner or corner radius

(A) Corner
(B) Corner radius