Plain scales are used to represent ___ units.

How are irregular boundary lines and short break lines drawn?

When a dotted line coincides with a solid line, the ___ line takes preference.

Scale of chords is used for ___.

To represent a solid in orthographic projections, at least ___ view are necessary.

The section planes are represented by its ___ on H.P. and V.P.

Drawing made to half of actual size is represented as ___.

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