Nine Patch Uneven Nine Patch
The Uneven Nine Patch style of quilt block is so named because not all of the nine individual patches are the same size as is the case in a regular nine patch quilt block. This style of quilt block is often used in 10" quilt block to make the math easier, but you will find this construction method in many other quilt blocks as well.

Crossroads America

Free Quilt Block Pattern

This Crossroads America quilt block is a nine patch design featuring half square triangles and a patch that is underused (in my opinion) and I am fast become its fan -- the square in a square unit.

I believe the "crossroads" are the patches forming an "X" with different routes going in the opposite directions. (If you look closely, you will notice that the corner units differ slightly from each other, thereby creating the variation.)

More Crossroads quilt blocks
~ Crossed Roads to Oklahoma
~ Crossed Roads to Oklahoma - Variation