Letter Math - lowercase "a"

Sometimes when I start getting a little sloppy with my copperplate calligraphy, I stop and remind myself that the letters are actually made up of specific, consistent shapes - O shapes and U shapes, mostly.  Instead of just making letter forms, I go back to making the letters out of those shapes.  Here's an example of what that looks like.  The O shape plus a U shape gives us a lowercase "a".  And, yes, I do love math.  

the "equation" of lowercase "a"

the "equation" of lowercase "a"