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.
Also question is, what is the use of a tee Square?
A T-square is a technical drawing instrument used by draftsmen 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.
What is in the geometry set?
Staedtler® Excellence geometry set includes short needle safety point compass and dividers, 45 deg and 60 deg set squares, 180 deg protractor, 15 cm ruler, sharpener, eraser, pencil, lettering guide and self centering mechanism.
What are the four main mathematical instruments?
Most instruments are used within the field of geometry, including the ruler, dividers, protractor, set square, compass, ellipsograph, T-square and opisometer.