Here you have an article that explains the difference between the euclidean and non-euclidean geometries.
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Shading is the proce ss of depicting a range of darkness t o create the illusion of volume and light in a drawing. In order to obtain ...
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What is a polygon? A polygon is a flat or plane, two-dimensional closed shape with straight sides. The point at which two sides of a p... -
This is a video that explains how to draw an hexafoil.
