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https://www.bravecroc.de/wp-content/uploads/2022/09/mercator_Beitrag.jpg600318All technical illustrators deal with projections to represent 3D objects on a plane. They apply standardized projections such as isometry and dimetry, or work in free projections and vanishing point perspectives. All techniques to compensate or at least minimize the drawbacks of representation on the plane and to convey 3D with only one representation.