Houston, we have nonagons! The house that we just stayed at on the beach, the one with the neat-looking but nonfunctional Tide Clock, redeemed itself mathematically by having glasses in the shape of nonagons:
Does that look like I faked it? Here’s the unedited picture, in case you don’t believe me:
And just so the other polygonal glasses don’t get jealous, there was also a hexagon glass:
These join the decagon mug in the polygonal kitchenware Hall of Fame.