set square
Right-angle drawing tool
A set square is a flat triangular tool used for drawing straight lines at specific angles, typically 45° or 30°/60°.
It's a staple of drafting and technical drawing, often used with a T-square to create perpendicular or angled lines: She used a set square to draw the roof pitch.
Called a triangle in American English.
Exactly ninety degrees
- perpendicularAt right angles
- triangleThree-sided plane figure
- 90 degreesMeasure of perpendicularity
- vertexPoint where edges converge
hypotenuse · isosceles · scalene · quadrilateral · bisect · congruent · diagonal · parallelogram
Degree of correctness
- alignmentCorrect relative positioning
- calibrationAdjusting for measurement accuracy
- rulerOne who governs
- straightedgeLine-drawing tool
marking out · layout · precision · exactness · checking · verification · tolerance · deviation
Device showing cardinal directions
- protractorAngle-measuring instrument
- blueprintDetailed technical drawing
- technical drawingPrecise specification illustration
- graph paperPre-gridded drawing sheets
drafting table · tracing paper · vellum · stencil · architect · engineer · draftsman · scale drawing
right angle
Exactly ninety degrees
- perpendicularAt right angles
- triangleThree-sided plane figure
- 90 degreesMeasure of perpendicularity
vertex · hypotenuse · isosceles · scalene · quadrilateral · bisect · congruent · diagonal · parallelogram · rectangle
accuracy
Degree of correctness
- alignmentCorrect relative positioning
- calibrationAdjusting for measurement accuracy
- rulerOne who governs
straightedge · marking out · layout · precision · exactness · checking · verification · tolerance · deviation · reference
compass
Device showing cardinal directions
- protractorAngle-measuring instrument
- blueprintDetailed technical drawing
- technical drawingPrecise specification illustration
graph paper · drafting table · tracing paper · vellum · stencil · architect · engineer · draftsman · scale drawing · plan
miter
Tall liturgical headdress
tenon · dovetail · cabinetmaking · workbench · woodworking · framing · layout · scribe · gauge · stock
- math toolscalculator, abacus, graphing calculator, scientific calculator, straightedge
- draftingblueprint, blueprints, technical drawings, dimensions, engineering drawing
- drafting toolscompass, protractor, triangle, ruler, drafting table
- Trianglestriangle, equilateral, isosceles, scalene, right triangle
- measuring toolstape measure, ruler, yardstick, tablespoon, teaspoon
- rulersmonarch, Caesar, ruler, sovereign, emperor
set squarecompass
Device showing cardinal directions
French curve · freehand drawing · spline · spirograph · protractor
set squareprotractor
Angle-measuring instrument
bevel gauge · freehand · eyeballing · estimation · approximation
square, setting, settled, unsettled, squares, squarely, squaring, subset, squareness