In a logarithmic spiral, the ___ of lengths of constitutive radii enclosing equal angles is constant.

In the sectioned view, all hidden details are ___.

Two types of freehand sketches are ___ and ___.

If a solid rests on an edge of its base on V.P., it must be kept ___ to H.P.

___ is the curve traced by a point moving continuously in one direction along a rotating line.

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

Lettering is done in ___ letters.

How should entries in the table be arranged to facilitate the division of the sheet?