To prevent warping of the board ……………. is cleated at its back.

The polyhedral having two equal and similar end bases, parallel to each other and are joined by other faces which may be…

Built drawing is normally constructed for the work of :

In orthographic projection top view is put

The art of representation of an object by systemic lines on a paper is known as

Set squares are not used to draw

The most important material for drawing is

Engineering drawing is the ……… of engineers