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Geometric Model by A. Harry Wheeler, Angle Bisectors of a Triangle (Portion), Plane Dissection

Geometric Model by A. Harry Wheeler, Angle Bisectors of a Triangle (Portion), Plane Dissection

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Usage conditions apply
This hinged model has two wooden triangular pieces, both with a green plastic top.
The four triangular pieces of two models denoted by MA.304723.755 and MA.304723.760 may be arranged to form a parallelogram (in two ways) and a triangle (in two ways), constituting a partially hinged dissection.
Objects MA.304723.755, MA.304723.760, and MA.304723.804 form model 6TQ (angle bisectors of a triangle). A drawing for this model, dated April 23, 1932, is in 1979.3002.55, folder 2. Another related drawing in the same folder is dated April 3, 1932.
Currently not on view
Object Name
geometric model
date made
ca 1932
ca 1932 04
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)
hinged (overall production method/technique)
average spatial: 1.2 cm x 12 cm x 9.7 cm; 15/32 in x 4 23/32 in x 3 13/16 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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