Geometric Model by A. Harry Wheeler, Symmetrical Pentagonal Dodecahedron
date: label: date made
content: 1933 03 23
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: This cut, folded, and glued tan paper model is a polyhedron of some complexity. At the top, at the bottom, and on all four sides is a figure with faces that are two irregular pentagons and four small triangles (two at each end). These contribute twelve pentagonal faces and twenty-four small triangular faces. Adjacent to each of the small triangles is a tiny isosceles triangle, contributing another twenty-four faces. Adjacent to the two inward facing edges of each pentagon are two irregular quadrilaterals (twenty-four total). Adjacent to each of these quadrilaterals is another quadrilateral (twenty-four total). This markes for a total of twelve pentagonal sides, twenty-four small triangular sides, twenty-four tiny triangular sides, and forty-eight irregular quadrilateral sides, or 108 sides altogether. However, each pentagon is in the plane of four quadrilaterals, two tiny triangles, and two small triangles, reducing the number of faces to twelve.
label: Description
content: A paper tag on the model reads: 333. Another mark reads: Symmetrical Pentagonal (/) Dodecahedron (/) Third Species (/) March-23-1933.
label: Description
content: Compare models MA.304723.601 and MA.304723.602.
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.304723.601
label: accession number
content: 304723
label: catalog number
content: 304723.601
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: tan (overall color)
label: Physical Description
content: cut and glued (overall production method/technique)
label: Measurements
content: average spatial: 11.5 cm x 11.5 cm x 12.5 cm; 4 17/32 in x 4 17/32 in x 4 29/32 in