OpenGL - Drawing in 2D: Triangles, Quads, and Polygons

In this OpenGL screencast (OpenGL video tutorial), I discuss how to draw triangles, quads, and polygons in OpenGL in 2d.
See the blog post at: https://davidwparker.com/2011/08/11/opengl-screencast-4-drawing-in-2d-triangles-quads-and-polygons/