1. It is an imaginary line that shows the part of the object that is being cut. 2. It is a kind of section whose cutting plane passes through the different fea- Ture of the subject
1.Skeching you have learned that when making a multiview sketch, hidden edges and surfaces are usually shown with hidden (dash) lines. The process of sketching the internal configuration of an object by showing it cut apart is known as sectioning. ..
2.Offset section An offset section is a means of including in a single section several features of an object that are not in a straight line. To do this, the cutting plane line is bent, or “OFFSET” to pass through the features of the part.
