Create
a Polygon Cylinder with the
following settings.Radius
= 1
Height = 2
Subdivisions Axis = 8
Subdivisions Height = 3
Subdivisions Caps = 0
Rotate it 90 degrees in the
Z axis.
Enter
the Modeling menu set and
go to Edit
Polygons Split Polygon Tool
Option Box. Hit the Reset Tool button
and set Number of Magnets
to 7 and the Magnet
Tolerance to 100.
Now let's start splitting. Start at the top
left edge and snap to the left end of the
cylinder. Continue splitting around the cylinder
one step at a time.
The split should be evenly distributed from
the first split to the last. To avoid any
issues with the first and last split you'll
have to start it on the edge indicated with
purple and end it on the edge indicated with
yellow like in the illustration to the right.
The illustration also shows how the line should
look if the cylinder where to be flat.
Split the
next segment of the cylinder in the same manner
as the last step.
Delete
some faces so your left with the shape showed
in the image to the right. Then delete the
edges like the ones who are selected in the
image, and then delete the vertices indicated
with yellow in the image.
You should be left with 8 quads/four sided
polygons.
Create
a Polygon Cylinder with the
following settings.Radius
= 1 
Enter
the Modeling menu set and
go to Edit 
Polygons Split Polygon Tool 
Delete
some faces so your left with the shape showed
in the image to the right. Then delete the
edges like the ones who are selected in the
image, and then delete the vertices indicated
with yellow in the image.