It’s ok. It’s not really something I constructed consciously – just a quick “word picture” that pops up in my head when I hear the words.
If you had to come up with a geometric metaphor for sympathy and empathy, is there something that might work better?
It’s also possible that your mind doesn’t think in that way too. Who knows why my brain paints these little outlines of things like this – it just does. i don’t know what anybody else’s does.