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

Description:

The four pieces of this model of a hinged dissection can be arranged as a quadrilateral or as triangle.

This is model 4X in Wheeler's list of decompositions of polygons (under quadrilaterals). A special case of a square interchangeable with an equilatral triangle is illutrated by models MA.304723.764, MA.704723.766, and MA.304723.819. There is a drawing in 1979.3002.55, folder 1, dated January 20, 1932.

Compare the unpainted model that is part of 1979.3002.22.

Date Made: ca 1932

Maker: Wheeler, Albert Harry

Location: Currently not on view

Place Made: United States: Massachusetts, Worcester

Subject: Mathematics

Subject:

See more items in: Medicine and Science: Mathematics, Science & Mathematics, Plane Dissections

Exhibition:

Exhibition Location:

Credit Line: Gift of Helen M. Wheeler

Data Source: National Museum of American History

Id Number: MA.304723.762Accession Number: 304723Catalog Number: 304723.762

Object Name: geometric modelOther Terms: Dissection

Physical Description: plastic (overall material)wood (overall material)metal (overall material)red (overall color)brown (overall color)cut, glued and hinged (overall production method/technique)Measurements: average spatial: 1 cm x 16.7 cm x 21 cm; 13/32 in x 6 9/16 in x 8 9/32 in

Guid: http://n2t.net/ark:/65665/ng49ca746a9-37e9-704b-e053-15f76fa0b4fa

Record Id: nmah_1074326

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