What is Orthographic Projection?
There are 2 ways to view things. One is by viewing objects in an Orthogrpahic manner and the other is viewing objects in a perspective view. Ig you have ever looked down a long road, you will notice that the road gets smaller and smaller the further down you look. This is a perspective view. In an Orthographic view, the road would remain the same width as far as you could see.