Octagonal Prism, Ross Solid

Description
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 1985.0112.191.
Location
Currently not on view
Object Name
geometric model
date made
ca 1895
maker
Ross, W. W.
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
place made
United States: Ohio, Fremont
ID Number
1985.0112.208
catalog number
1985.0112.208
accession number
1985.0112
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Arithmetic Teaching
Data Source
National Museum of American History, Kenneth E. Behring Center

Comments

Add a comment about this object