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Geometric Model by A. Harry Wheeler, Parallelogram Transformable into Triangle, Plane Dissection

Geometric Model by A. Harry Wheeler, Parallelogram Transformable into Triangle, Plane Dissection

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Usage conditions apply
The four pieces of this hinged dissection can be arranged as a parallelogram or a triangle. The plastic that covers the pieces has been chosen so that a parallelogram appears inscribed in both forms of the model.
This is Wheeler's transfomation 4Y. See 1979.3002.43 (folder 2) and 1979.3002.43 (folder1).
The drawing in folder 1 is dated January 20, 1932. It is entitled "Parallelogram into a Triangle."
An annotation with the drawing attributes it to Taylor. Messanger of Mathematics, Aug 1905-April 1906, pp. 96-97. See also 1979.3002.50.
Currently not on view
Object Name
geometric model
date made
ca 1932
ca 1932 01 20
Wheeler, Albert Harry
Wheeler, Albert Harry
place made
United States: Massachusetts, Worcester
associated place
United States: Massachusetts, Worcester
Physical Description
plastic (overall material)
wood (overall material)
metal (overall material)
green (overall color)
brown (overall color)
hinged (overall production method/technique)
average spatial: 1.8 cm x 21.5 cm x 12.8 cm; 23/32 in x 8 15/32 in x 5 1/32 in
ID Number
accession number
catalog number
Credit Line
Gift of Helen M. Wheeler
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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