Maybe you are finding difficulties trying to draw and getting the idea of perspective and 3d drawing. Here there are 2 voluntary works for you. Work 1: Draw the views of this pieces. Download here . Work 2: Draw the 3D view given the views of a piece. In this exercise you can do the 3D pieces that you want. After you finish each 3D drawing, press the email button and send a copy to mercedes.tecnologia@yahoo.es , and I will check if the 3D piece is correct. Come on!! Press and Start now Drawing 3D If you work the pieces, maybe you will find some in the class exam....