Comparative scales are used for ___.

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

When a line is parallel to both the H.P. and V.P., it has ___.

Parallel ruling straight edge machines are used to draw _____:

Triangulation method is used for developing ___.

___ method is used for developing spheres.

The application of development is generally used in ___ metal work.

The inclined lines are drawn from left to right when they are nearly ___.