Open Triangle

Open Triangle

<< >>
Usage conditions apply
Downloads
Description
This unmarked 6" 30°-60°-90° triangle with an open interior is made of two different woods, with a section of darker wood set between two sections of lighter wood. The dating of other objects from this donor suggests the triangle was made around 1900. Compare to MA.335329. James W. Queen of Philadelphia sold a similar walnut or mahogany triangle with a maple inlay for 50¢ in 1883.
Reference: James W. Queen & Co., Priced and Illustrated Catalogue of Mathematical Instruments (Philadelphia, 1883), 51.
Location
Currently not on view
Object Name
triangle
date made
ca 1900
Physical Description
wood (overall material)
Measurements
overall: 8.6 cm x 5 cm x.3 cm; 3 3/8 in x 1 31/32 in x 1/8 in
ID Number
MA.335330
catalog number
335330
accession number
305958
Credit Line
Gift of Eunice L. Hoffman
subject
Mathematics
Drawing Instruments
See more items in
Medicine and Science: Mathematics
Squares and Triangles
Science & Mathematics
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Comments

Add a comment about this object