Visible Lines

Visible Lines

Also called “object” lines, visible lines denote physical features that are visible in the view in which they appear.  For instance, a cylinder shown below is shown in two views.  In one view, the cylinder looks like a circle, in the other it appears as a rectangle.  The visible lines show the contour of the curved surface and the edge of the flat surface.

Visible lines are thick.

Visible lines show edges and contours that would appear in a chosen view.