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Geometric Model by A. Harry Wheeler, Quadrilateral Inside Out, Plane Dissection

Geometric Model by A. Harry Wheeler, Quadrilateral Inside Out, Plane Dissection

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Usage conditions apply
This hinged dissection has four pieces which may be arranged as a quadrilateral in two ways. An inscribed parallelogram transforms inside out. The model has a wooden base, metal hinges and a plastic top.
This appears to be Wheeler's model 4S, a Quadrilateral Inside Out. See his list of decomposition of polygons.
Currently not on view
Object Name
geometric model
Wheeler, Albert Harry
place made
United States: Massachusetts, Worcester
Physical Description
plastic (overall material)
wood (overall material)
metal (overall material)
green (overall color)
brown (overall color)
red (overall color)
cut, glued and hinged (overall production method/technique)
average spatial: 1 cm x 24.5 cm x 14.5 cm; 13/32 in x 9 21/32 in x 5 23/32 in
ID Number
accession number
catalog number
Credit Line
Gift of Helen M. Wheeler
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Plane Dissections
Data Source
National Museum of American History
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