Four point Triangles? What could I possible be
talking about? Four point Tri's are simply
four point polygons in the shape of three
point polygons. I hope to share with you
a technique that I have used for awhile now
that allows me to localize my detail in the
construction of an model. This technique
allows me to go from many polygons in one
area to very few in another. The example
I will use here is going from two rows of
polygons to one row. Download the Tutorial
file to follow along or start from scratch.

Below is an example that shows
two rows on the left and one row on the right,
we will connect the these polygons with a four
point Tri.

The first step is to create
the Four point tri. Select the points in the
same order as the image below.

Next select "Create/Make
Pol" to create the polygon. Your object
should look similar to the image below.

Now we need to connect the bottom
of the two rows together. Select the points in
the same order as the image below.

We need to weld these points
together to finalize the construction. "Select
Detail/Weld". Your object should look
similar to the image below.

That's all there is to it! This
technique can be used in any area that you want
to reduce polygons, and can also be used when
connecting objects with different polygon counts.
For example, you might have a hand object that
has allot of detail and want to connect it to
an arm that has fewer polygons. The
image below is a head model that takes advantage
of this technique in several areas. Be
sure to download this sample file to see this
technique used in an actual object. Sample
Head

I've used this technique for
many years now and have found it very valuable,
and I hope you will as well.]