The idea of ​​the program depends on finding the corresponding chord angle of the wall through the equations trigonometry as well as finding the angles associated with the Potter Alrkinh and in all cases the corner, even though different depths or ribs Alrkinh completely do not worry you will get the results in a very accurate and high speed as well as if different wall angle was obtuse or acute all of this deals with the program and if you want to know how to deal with the application you will find a link to guide the user within the application.