Abstract
The central projection of circles with different radii may result in conics of any type. Depending on whether the projection cone C, i.e., the connection of the circles and the center C of the projection, avoids, touches, or intersects the vanishing plane, the image of the circle is an ellipse, a parabola, or a hyperbola.
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© 2016 Springer-Verlag Berlin Heidelberg
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Glaeser, G., Stachel, H., Odehnal, B. (2016). Euclidean 3-space. In: The Universe of Conics. Springer Spektrum, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-45450-3_4
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DOI: https://doi.org/10.1007/978-3-662-45450-3_4
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Publisher Name: Springer Spektrum, Berlin, Heidelberg
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Online ISBN: 978-3-662-45450-3
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