Rectangle Transformable Into an Obtuse Triangle, Probably a Ross Surface Form

Geometric Model - possible Ross Surface Form - Rectangle

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Geometric Model - possible Ross Surface Form - Rectangle
Geometric Model - possible Ross Surface Form - Disassembled
Geometric Models - Ross Surface Forms - Bisected Rhomboid (#9) Second from Left in Top Row
Bisected Rhomboid - Ross Solid Model
Bisected Rhomboid - Ross Solid Model
Bisected Rhomboid - Ross Solid Model
Bisected Rhomboid - Ross Solid Model
Bisected Rhomboid - Ross Solid Model
Bisected Rhomboid - Ross Solid Model
Bisected Rhomboid - Ross Solid Model

Object Details

maker

Ross, W. W.

Description

This is apparently is one in a series of models of plane figures (surface forms) designed by William Wallace Ross, a school superintendent and mathematics teacher in Fremont, Ohio. The three doweled pieces of this unpainted wooden model can be arranged either as a rectangle or as an obtuse-angled triangle.

Compare models 1985.0112.190 through 1985.0112.202. For further information about Ross models, including references, see 1985.0112.190.

Location

Currently not on view

Credit Line

Gift of Wesleyan University

date made

ca 1895

ID Number

1985.0112.195

accession number

1985.0112

catalog number

1985.0112.195

Object Name

geometric model

Physical Description

wood (overall material)

Measurements

overall: 1 cm x 18.4 cm x 10 cm; 13/32 in x 7 1/4 in x 3 15/16 in

place made

United States: Ohio, Fremont

See more items in

Medicine and Science: Mathematics

Science & Mathematics

Arithmetic Teaching

Data Source

National Museum of American History

Subject

Mathematics

Metadata Usage

CC0

Link to Original Record

https://n2t.net/ark:/65665/ng49ca746a5-181e-704b-e053-15f76fa0b4fa

Record ID

nmah_694072