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A quadrilateral slide (or Q-slide) transforms one quadrilateral to another with the same angles. The notion was introduced by Harry Lindgren (1956).
Contributed by: Izidor Hafner (March 2011)
Based on work by: Greg N. Frederickson
Open content licensed under CC BY-NC-SA
G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 1997, 2002 pp. 41-42.
Wolfram Demonstrations Project
Published: March 7 2011