Consider a second pyramid.

There are twelve shadings of this pyramid.












Consider combining the two pyramids in a single square.

If there are twelve ways to shade each of these pyramids, there are 144 different ways to shade them both.
Consider a second pyramid.
There are twelve shadings of this pyramid.
Consider combining the two pyramids in a single square.
If there are twelve ways to shade each of these pyramids, there are 144 different ways to shade them both.