This is used in drawings to represent the edge of a solid object:

Drawings created with commercial software are typically saved as:

When creating a Cutting Plane line with Auto-CAD it is customary to use a ________ to create the line.

The second line of dimensions out from the plan generally includes _________.

These are vertical distances above a common datum, reference plane or point:

An advantage of this type of view is that each view shows the object all the way through as if it were transparent:

The ________ tool on the Dimension tool bar places the length of an arch on a drawing.

This type of drawing shows two lines representing the pipe diameter: