Three Interesting Names

Figure showing a 5 in the dice is called a quincunx. It is 4 points forming a rectangle or a square, and an extra point in the middle.
The separation or gap that forms between two front teeth is called a diastema, and it can result from a disproportionate relationship between the size of your teeth and the size of your jaw.

We always called it a “division sign,” but in fact, this symbol is called an obelus.