set square
Sign in to saveAlso known as triangle, triangular plate, triangle ruler
geometry device used for technical drawing
~3 min read
Encyclopedic overview
triangle, set square
A set square or triangle (American English) is an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angle to a baseline.
Excerpted from Wikipedia’s “set square” article, available under the CC BY-SA 4.0 licence.