When the cutting plane passes through the axis of solid shafts, bolts, screws are ___.

An oblique solid is one which has its axis ___ to its base.

A straight line will represent its true length in that plane to which it is ___.

Lettering should be written in such a way that it can be read from ___ with the main title........

In making a full section, ___ of the object is imagined to be cut off.

The ratio of distance on the drawing sheet to the corresponding actual distance of the object is known as ___.

In oblique perspective, the number of vanishing points is ___.

Comparative scales are used for ___.