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EXAMPLE 1Just like the picture to the right, a triangle or triangles can be drawn. This example is a 2D drawing of a human face so there are limitations but on a real human face there are slope on the face which prevents the plastic surgeon to draw a precisely measured and drawn triangle. So the doctor can draw one side with the desired measurement and go on by adding in angles whether they are 30. 45, or 90 degrees.
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