Scale of chords is used for ___.

A straight line is defined as the ___ distance between two points.

When a point lies on the reference line, its two views lie on ___.

Dimensions should be taken from visible ___ rather than from hidden lines.

The section obtained on a plane when the section plane is not parallel to the plane is called ___.

In perspective projection, the ___ plane is placed between the object and the eye.

___ is generally used to separate the two portions of a half sectional view.

The materials required for freehand sketching are ___.