Quiz: Are you a good eyeballer?

Here's a visual quiz where you can test your ability to eyeball things. Where's the midpoint? When is the line parallel? You get the idea. I started off horribly but improved enough to get a 2.18. I wonder if taking this quiz every day would help train me, so I'd eventually be able to cut paper and fabric without measuring ever again. Hmm. Somehow I doubt it.