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Sphere perspective is a drawing technique that helps artists create the illusion of three-dimensionality on a two-dimensional surface. It is based on the principle that all objects in space can be inscribed within a sphere, and that the shape of the sphere will determine the way that the object appears to the viewer. Sphere perspective is particularly important in drawing human figures, as it allows the artist to accurately depict the complex curves and contours of the body. It can also be used to create realistic drawings of landscapes, architecture, and other objects.

There are a number of different ways to use sphere perspective in drawing. One common method is to start by drawing a circle that represents the sphere. The circle should be placed on the page in such a way that it will encompass the entire object that you are drawing. Once you have drawn the circle, you can then begin to sketch the object inside the circle, using the circle as a guide to help you determine the correct proportions and angles. Another method is to draw a series of tangent circles that represent the different parts of the object. This method can be helpful for creating more complex drawings, as it allows you to break the object down into smaller, more manageable parts.

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