The document discusses different methods for representing and filling polygons in computer graphics, including: 1) Solid-fill and pattern-fill for filling polygon interiors. 2) Representing polygons by listing vertex coordinates or relative positions to simplify translation. 3) Using the odd-parity rule to test if a point is interior or exterior to a polygon. 4) The scan-line polygon fill algorithm which horizontally scans a polygon, identifies intersecting edges, and draws interior lines.