triangle ruler
Angled measuring tool
A triangle ruler is a drafting tool with three straight edges meeting at angles, used for drawing lines and measuring angles.
The most common forms are the 45-45-90 and 30-60-90 degree triangles used in technical drawing and architecture.
Also called a set square or simply a triangle: She used a triangle ruler to draw parallel lines.
- geometryScience of spatial relationships
- right angleExactly ninety degrees
- draftingCreating technical blueprints
- drafting tableInclined desk for sketching
- drawing toolsInstruments for making marks
set square · angles · measuring · mechanical pencil · architect · architectural plans · technical drawing · plastic · transparent · degrees · perpendicular · parallel · hypotenuse · sketch · blueprint · precision · school · math class
triangle rulercompass
Device showing cardinal directions
French curve · spline · freehand · protractor
triangle, ruler, triangles, triangular, triangulation, triangulate, triangulated, triangulating, rulers