When the picture plane coincides with the object, the perspective of the object will be of its ___ size.

An invisible line should intersect a visible line with ___.

The angle between isometric axes is ___.

Three-point projection is an example of ___ projection.

Projectors are drawn using ___ pencil and thin lines are used.

In the sectioned view, all hidden details are ___.

The art of representation of an object by systematic lines on paper is called:

Any two lines that are not parallel with each other and do not intersect are called ___ lines.