Geometric Model by A. Harry Wheeler, Pyramid with Circumscribed Prisms
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: This wooden model shows a triangular pyramid with three small triangular prisms emerging from one side. These form, together with the pyramid itself, three stacked triangular prisms. A paper tag on the model reads: 236.
label: Description
content: George Wentworth, in his textbook <I>Plane and Solid Geometry</I, as revised by David Eugene Smith, uses such a figure in the proof that if two triangular pyramids have equal bases and equal altitudes, they are equal in volume. The proof discusses both circumscribing triangular prismss like these and inscribed prisms, arguing that if the sides of the prism are divided indefinitely, the area of the inscribed and circumscribed figures will be equal. This leads up to the discussion of the volume of a triangular pyramid.
label: Description
content: Compare MA.304723.179, MA.304723.589 and MA.304723.662.
label: Description
content: Reference:
label: Description
content: George Wentworth with David E. Smith,, <I>Plane and Solid Geometry</I>, Boston: Ginn and Company, 1906, p. 342 .
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.304723.589
label: accession number
content: 304723
label: catalog number
content: 304723.589
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: wood, balsa (overall material)
label: Physical Description
content: cut and glued (overall production method/technique)
label: Measurements
content: average spatial: 10.2 cm x 9 cm x 7.6 cm; 4 1/32 in x 3 17/32 in x 3 in