I will answer your question even the answer is not such that usealy are
given if you just started with AutoCAD ---- you see it is acturly an
interesting challance that is solved easy and the solution don't just
bring you a drawing but point to a way to produce the things you drawn
3D by using just two planes.
Think about it , we usealy need 3 planes all projecting and drafting
work with an idea that we need 3 planes for a 3D model , where in fact
only 2 are needed.
But what is difficult about it, and the reson this usealy are not an
amaturs question, is that 99 pct. will turn to the tradisionla 3
planes, front,side and top planes. Still what if you only needed two
planes to project the foundations for a house, a ship, an aeroplane
fuselage ,that would indicate that manufactoring the framework also
will be only two thirds of the efford.
Please check the 3*D-H or 3D-Honeycomb method ------ a couple of month
ago I had a 12 page article published in a Chinese architecture and
engineering magazin ; halve in english and halve in Chinese with 5
pictures showing just how you can draw and in particular project a 3D
structure from two independant planes ,check this link ;
there are an english text ,the one translated into Chinese ,and if you
read the pages you will know the answer to your question in this link ;