Question 1196069
<pre>
{{{drawing(600,300,-14,14,-7,7,

green(line(-3.25,3,7.75,3), line(-7.75,-3,-3.25,3),line(7.75,3,3.25,-3),line(-7.75,-3,3.25,-3)),
line(-11,0,11,0),line(0,-11,0,11),line(-9,-12,9,12),
red(line(0,0,0,2),line(0,0,3,0),line(3,0,3,2), line(-4.5,-6,-1.5,-6),
line(-1.5,-6,-1.5,-4), line(-4.5,-6,-4.5,-4),

line(0,0,-4.5,-6),line(-1.5,-6,3,0),line(-1.5,-4,3,2),line(0,2,3,2),
line(0,2,-4.5,-4),line(-1.5,-4,-4.5,-4)

), locate(11,0,y), locate(.2,7,z),locate(-4.8,-6.4,x)

)}}}

Greenestamps gave you the coordinates.  Here is the 3D graph.
The shortest edges are 2, the medium sized edges are 3, and
the longest edges are 6.  

I don't know how your teacher gives the order of the vertices.
I guess B is on the x-axis, D on the y-axis and E is on the z-axis.
So you will have to supply the last 3 letters for the vertices.

G=(6,3,2) is the front upper right vertex
  (6,0,2) is the front upper left vertex
B=(6,0,0) is the front lower left vertex
  (6,3,0) is the front lower right vertex
  (0,3,2) is the back upper right vertex
E=(0,0,2) is the back upper left vertex
A=(0,0,0) is the back lower left vertex
D=(0,3,0) is the back lower right vertex

To find the distances, use

{{{DISTANCE}}}{{{""=""}}}{{{sqrt((x[2]-x[1])^2+(y[2]-y[1])^2+(z[2]-z[1])^2)}}}

Edwin</pre>