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Drawing angles with set squares

 Information taken from:http://www.technologystudent.com/despro_flsh/ssquar1.html 

 and http://www.profesordedibujo.com/index.php/apuntes/1-conceptos-basicos-2.html

Set squares are used in conjunction with T-squares to draw accurate angles. There are two main types of set square. One has an angle of 45 degrees and the other 30/60 degree angles.

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The 45 degree set square also has a 90 degree angle. 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.