A line which defines the center of arcs, circles, or

symmetrical parts

• Extension Line

• Center Line

• Dimension Line

• Object Line

Line which represents where a dimension starts and stops.

• Extension Line

• Object Line

• Construction Line

• Hidden Line

A line which represents distance

• Construction Line

• Hidden Line

• Object Line

• Dimension Line

A heavy solid line used on a drawing to represent

the outline of an object.

• Hidden Line

• Object Line

• Constuction Line

• Extension Line

Line lightly drawn lines to guide drawing other lines and shapes.

• Hidden Line

• Construction Line

• Extension Line

• Object Line

A line type that represents an edge that is not directly visible.

• Extension Line

• Object Line

• Construction

• Hidden Line

A method of representing three- dimensional objects on a plane having only length and breadth. Also referred to as Right Angle Projection.

• Orthographic Projection

• Leader Line

• Cabinet Pictorial

• Isometric Sketch

Line which indicates dimensions of arcs, circles and detail.

• Hidden Line

• Construction Line

• Leader Line

• Object Line

Oblique pictorial where depth is represented as half scale compared to the height and width scale.

• Isometric Sketch

• Leader Line

• Cabinet Pictorial

• Cavailer Pictorial

Oblique pictorial where height, width, and depth are

represented at full scale.

• Cavalier Pictorial

• Cabinet Pictorial

• Pictorial Sketch

• Linear Pattern