Geometric Model by A. Harry Wheeler, Trihedral Angles
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: In this cut and glued plastic model, a transparent tetrahedron has isosceles triangles for side faces. Inside it is a transparent triangle with edges on three faces. George Wentworth used two such figures in a diagram in a theorem defining two equal trihedral angles in terms of the face angles on the faces surrounding the trihedral angle.
label: Description
content: For a related pattern, dated February 2, 1945, see 1979.0102.109.
label: Description
content: Compare 1979.0102.206 and 1979.0102.207.
label: Description
content: Reference:
label: Description
content: George A. Wentworth (with David Eugene Smith), <I>Plane and Solid Geometry</I>, Boston: Ginn and Company, 1913, pp. 312-313.
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.304723.714
label: accession number
content: 304723
label: catalog number
content: 304723.714
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: green (overall color)
label: Physical Description
content: cut and glued (overall production method/technique)
label: Measurements
content: average spatial: 7 cm x 7.5 cm x 4.5 cm; 2 3/4 in x 2 15/16 in x 1 25/32 in