It appears that the grader and I were not entirely in sync about the use of triangles on homework #7. Even though it didn’t say so in the instructions, I’d indicated that it was ok to use triangles so long as somewhere on the assignment you’d written out a comparable structure in full, but it appears that a number of half-points were taken off for triangles that should have qualified as ok.

If you could look over your homework and identify where there are triangles that refer back to already completed structures, that would be good. I’ll try to mention this in class tomorrow, and maybe after class ends I can take a quick inventory and refund you some the points that were lost to this.

Sorry about the confusion…