In the sectioned view, all hidden details are ___.

Two types of single-stroke letters are ___ and ___.

The pencil should be held by the thumb and first finger so that it rests on the second finger at about ___ from the penc…

Every object is built up of a number of ___.

The vertical lines are always drawn from ___ to ___.

Scale of chords is used for ___.

An isometric projection is a  ___.

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