Object Details
- Description
- This 5-1/2" 20°-70°-90° wooden triangle has a 3/8" round hole at the center for positioning and holding the instrument. Compare to 304826.137, 335331, and 1979.0876.02. A previous user has written the numbers 20, 70, and 90 at the appropriate corners. For other drawing triangles with unusual angle measurements, see 334622 and 1990.0690.01. The Department of Mathematics at Brown University gave this object to the Museum in 1973.
- Location
- Currently not on view
- Credit Line
- Gift of Brown University Department of Mathematics
- ca 1900
- ID Number
- MA.304722.09
- catalog number
- 304722.09
- accession number
- 304722
- Object Name
- triangle
- Physical Description
- wood (overall material)
- Measurements
- overall: 6.6 cm x 14 cm x .1 cm; 2 19/32 in x 5 1/2 in x 1/32 in
- See more items in
- Medicine and Science: Mathematics
- Squares and Triangles
- Science & Mathematics
- National Museum of American History
- Subject
- Mathematics
- Drawing Instruments
- Record ID
- nmah_904225
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a7-4751-704b-e053-15f76fa0b4fa
