In isometric projection, circles are represented as ellipses of the object in ___.

Sectional lines are assumed to be drawn ___ to the axis of section.

To facilitate extension, where should entries in the table begin?

The application of development is generally used in ___ metal work.

The intersection between solid body and straight line will be ___.

The curve generated by a point on the circumference of a rolling circle which rolls outside the directing circle is the …

The line of intersection depends on the ___ of solids.

A surface of an object appears in its true shape when it is ___ to the plane of projection.