overall: 1 cm x 15 cm x 10 cm; 13/32 in x 5 29/32 in x 3 15/16 in
Object Name:
geometric model
Place made:
United States: Ohio, Fremont
Date made:
ca 1895
Description:
This is the fifth 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 unpainted wooden model is divided into two pieces, with the smaller piece missing.
With the smaller piece, the model could be arranged either as a parallelogram or a rectangle. A paper label attached to the model reads: Dissected Rhomboid 4x6.
Ross argued that the parallelogram (or, in his terminology, rhomboid), like the rectangle, was the product of its length and its altitude.
Compare models 1985.0112.190 through 1985.0112.202.
For further information about Ross models, including references, see 1985.0112.190.
