GEOMETRY DRAWING AND SUPPLIES CONCEPTS AND DEFINITIONS

-FREEHAND:Draw by hand without guiding instruments.
-LINE/TECNICAL DRAWING:It is a drawing made with the help of supplies
-COMPASS:It is a tool for drawing circles and arcs.
-PROTACTOR:An instrument for  drawing angles on paper.
-SET SQUARES:(UK)TRIANGLES(USA):They are two  rules with triangular shape.One is called the 45º triangle(45º square,UK)and the other the 30/60º triangle.Both have the 90º angle.So they are used to draw certain angles and also to draw parallel lines.
-ERASER:An object,such as a piece of rubber,used for deleting something.
-RULER:An instrumentused to draw straight lines.Also called straight edge.