Descriptive geometry drawing definition

Descriptive geometry is the theoretical foundation of engineer­ ing drawing which, in turn, is the preparatory graphical course required for studying all general engineering and special subjects. Descriptive geometry develops the capacity for imagining objects in space which is essential for reading drawings.The nature of Technical Drawing is drawings made by Linear Projection. Descriptive Geometry is a collection of guides and principles on how to accurately do technical drawing. This is before the time of modern computers with CAD software. Projective Geometry is a branch of mathematics that studies some properties about projection.