Octagonal Prism, Ross Solid


This is one of a series of models illustrating the volume of solids designed by William Wallace Ross, a school superintendent and mathematics teacher in Fremont, Ohio.

The unpainted wooden model has eight rectangular sides and an octagonal top and bottom. Four straight lines join opposite vertices of the octagons on each end, suggesting how the solid might be divided into eight triangular prisms. A mark on a label on the side reads: OCTAGONAL PRISM. Further text discusses the surface area and volume of the solid.

In the series of plane figures, Ross compared the area of a circle to the area of circumscribing polygons of increasing numbers of sides. To demonstrate the volume of a cylinder, he compared it to various regular prisms, including the octagonal.

Compare models 1985.0112.205 through 2012.0112.217. For further information about Ross models, including references, see 1985.0112.190.

Date Made: ca 1895

Maker: Ross, W. W.

Location: Currently not on view

Place Made: United States: Ohio, Fremont

Subject: Mathematics


See more items in: Medicine and Science: Mathematics, Science & Mathematics, Arithmetic Teaching


Exhibition Location:

Credit Line: Gift of Wesleyan University

Data Source: National Museum of American History

Id Number: 1985.0112.208Catalog Number: 1985.0112.208Accession Number: 1985.0112

Object Name: geometric model

Physical Description: wood (overall material)Measurements: overall: 15 cm x 5 cm x 5 cm; 5 29/32 in x 1 31/32 in x 1 31/32 in

Guid: http://n2t.net/ark:/65665/ng49ca746a5-1df8-704b-e053-15f76fa0b4fa

Record Id: nmah_694085

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