LaTeX.org

i begin by this

\usetikzlibrary{shapes,shapes.multipart}
\begin{tikzpicture}
\node [draw,trapezium,trapezium left angle=70,trapezium right angle=-70,minimum height=5cm] {};

\end{tikzpicture}

in 2d , it is just like we do in class when the prof want to draw a space

and yes the lines must be paralel

because i don't use the same symbole , i must change some idication on the picture

It is from a Phd thesis

It represent the Orlisz space L_{\Phi}(\Omega) and the space E_{\Phi}(\Omega) where E_{\Phi}(\Omega)=\overline{L^{\infty}(\Omega)}

Hello, Please how to do to draw this picture

THANK YOU VERY MUCH

I need help on how to draw this graph
http://i.stack.imgur.com/FLCaW.png

The question was also asked on TeX.SX.

i tryed this: but i don't know how to make 4 points like in the picture

\usetikzlibrary{arrows,intersections}
\tikzpicture[
thick,
>=stealth',
dot/.style = {
draw,
fill ...