drawing with pencil technique

I am going to share with you what I know about technical drawing in this tutorial, especially using axonometric perspective techniques, isometrics, monge system, vanishing point sketches, sectional views. In this video we will see how to make a vanishing point of a large space of a city ​​but with few details, the idea is that you understand the perspective process, that is, the diagonals, the vanishing point, the ground line, the observer's height line, and then in future videos you can go into details.
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