Question : Phong Shading

Im sick and tired all textbook answers to phong shading, has anyone got a simple explanation on how do phong shade a polygon?

Answer : Phong Shading

I am agreed with euclid, you should award the points to Lischke based on the information in the question you were given the correct answer, unless you already knew the answer you wanted to hear and didnt hear it.In which case that does not make your answer correct and it does not make the answer Lischke gave wrong, but you dont need to ask a question if you already have the answer. On that I know I am correct.