Interrelationship of Form

This is the penetration final. In he process of making this I thought it would be nice if I make all of the shapes make the white square in the middle. 

This is the overlapping final. I was originally just going to make it one pair of circles in the middle. But, I decided to make two pairs of circles instead because there would be a lot of empty space. There still is, but, not as much. 

This is the detachment final. It is two triangles that used to be one giant shape. But it is now separated. 

This is the touching final. I was thinking about puzzle pieces fitting perfectly when done right. So when done wrong they just touch their sides. So, its four non-fitting puzzle pieces touching. 

This is the union final. I put a small square in the middle and added 4 small triangles in order to unify them into one big drawing. 

This is the subtraction final. I wasn't really sure what to draw for this final. So I drew a part of a square being subtracted from the rest creating a small rectangle which is on he right as shown. 

This is the intersection final. I created two lines with sharpie and two lines with pencil that would go across each other. This was my favorite to make because it was simple and fast. 

This is the coinciding final. I wasn't sure what to draw for this final. So, I made the two triangles into one so they coincide.