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www.reference.com/home-garden/set-square-used-b6b11accc2a260f4

What Is a Set Square Used For? Set squares are used for drawing perpendicular and parallel lines, according to Mathsteacher.com. The two set squares are named according to their angles.

en.wikipedia.org/wiki/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.. The simplest form of set square is a triangular piece of transparent plastic (or formerly of polished wood) with the centre removed. More commonly the set square bears the markings of a ...

www.wisegeek.com/what-is-a-set-square.htm

A set square is a drawing aid used to draw known, pre-set angles in technical drawing and mathematical exercises. Set squares are triangular in shape and typically made of thin plastic, wood, or, less commonly, light-gauge steel. All set squares offer three drawing surfaces or planes representing three different angles which always include one ...

mathsteacher.com.au/year8/ch10_geomcons/07_setsquare/set.htm

Use a set square to draw a perpendicular to a given line, AB, through a point, P, not on the line. Solution: Step 1: Set an edge of the set square on the given line so that the other edge is just in contact with the point.

technologystudent.com/despro_flsh/ssquar1.html

This can be used for drawing vertical lines. The 30/60 degree set square also has a 90 degree angle. This set square can be used to draw 30, 60 or 90 degrees angles. Set squares are only accurate if they are used along with a T-square. The set square must rest on the T-square which should be pushed against the edge of the board.

www.merriam-webster.com/dictionary/set square

Set square definition is - a usually plastic or metal device that is shaped like a triangle and used for drawing straight lines and angles. a usually plastic or metal device that is shaped like a triangle and used for drawing straight lines and angles…

www.answers.com/Q/What_is_a_Set_square_used_for

Set squares are useful for drawing parallel lines and perpendicular lines.

en.wikipedia.org/wiki/T-square

A T-square is a technical drawing instrument used primarily as a guide for drawing horizontal lines on a drafting table.It may also guide a set square to draw vertical or diagonal lines. Its name comes from its resemblance to the letter T. T-squares come in varying sizes, common lengths being 18 inches (460 mm), 24 inches (610 mm), 30 inches (760 mm), 36 inches (910 mm) and 42 inches (1,100 mm).

www.woodmagazine.com/.../using-a-combination-square

You can only rely on your tablesaw's 0° and 45° blade stops if you've set them accurately to begin with. Use your combo square to set each angle precisely, adjusting the 0° stop before moving to the 45° stop. Place your square's head on the cast-iron top, as shown, rather than the throat insert for maximum accuracy.

www.quora.com/What-are-set-squares-used-for

Set Squares are used for several purposes. It totally depends what your requirement is. For example, they can be used for Geometry if you are a geometry fan. But this is just basics. Else, there is a subject, popularly known as Technical Drawing, ...