Convex disks can cover their shadow
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We give a short proof of the fact that given any two-dimensional convex disk in three-space and an orthogonal projectionC′ ofC on a plane then there is a congruent copy ofC which containsC′.
KeywordsOrthogonal Projection Parallel Line Discrete Comput Geom Convex Compact Computational Geometry
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© Springer-Verlag New York Inc. 1990