Geometric Model by A. Harry Wheeler, One-Sided Polyhedron
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: This mottled turquoise plastic model is a one-sided polyhedron derived from a regular icosahedron by removing alternate octants. It has as faces four equilateral triangles, twelve smaller triangles (each with its hypotenuse along an edge of an equilateral triangle), and three octagons (each made up of four coplanar irregular quadrilaterals). Thus it has, Wheeler says, nineteen faces, eighteen vertices, and thirty-six edges, for an Euler characteristic of 18 - 36 + 19 = 1. Wheeler also identified the model as M14.
label: Description
content: Reference:
label: Description
content: A.H. Wheeler, <I>Catalog of Models</I>, A. H. Wheeler Papers, Mathematics Collections, National Museum of American History.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Worcester
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Helen M. Wheeler
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.304723.375
label: accession number
content: 304723
label: catalog number
content: 304723.375
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: blue, speckled (overall color)
label: Physical Description
content: cut and glued (overall production method/technique)
label: Measurements
content: average spatial: 4.5 cm x 7 cm x 5 cm; 1 25/32 in x 2 3/4 in x 1 31/32 in