To understand why 2nd and 4th angle projection is not used? Firstly we need to understand the concept behind orthographic projection system. Because of the limitations of 2nd and 4th angle projection system. Only First and Third angle pro ...
First Angle and Third Angle Projection
First angle and third angle projection are Orthographic projection system. 1st angle projection is more popular in European countries. Whereas third angle projection is more popular in north america and Asian countries. Orthographic P ...