axes are not labeled alpha, they are a variable.
line y isn't a line, it is a line segment
the 85 degree delta intersection is fine, except that its not 85 degrees.
spots are points and if you say #124, I want to see 123 other important spots.
It looks like you could fit a fork and a knife in it as well (notice two more pockets). However, your comment is still...valid? I don't think valid is the word I'm looking for, but it's what I'm going to use.