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A body is shown as projecting from its surface projection lines, and these lines are cut by a plane. By connecting the points on the plane made by the projection lines the projection of the body is formed, and it corresponds in shape with the body itself.

Projected Geometric View

A body is shown as projecting from its surface projection lines, and these lines are cut by a plane.…

All six views in a projection.

Six views of Object

All six views in a projection.

It can readily be seen that one view only with not give a complete picture of a solid object. Usually two or more views are necessary, according to the complication of the object or body.

Top, Front, and End Projections

It can readily be seen that one view only with not give a complete picture of a solid object. Usually…

"Light projected by a parabolic reflector." —Croft 1917

Parabolic Reflector

"Light projected by a parabolic reflector." —Croft 1917