The grünbaum-rigby configuration is a special way of arranging points in a two-dimensional space. Imagine you have a bunch of dots and you want to connect them with lines so that each dot is connected to exactly three other dots.
To make this configuration, you start by placing four dots in a square shape. Then, you add four more dots at the midpoint of each side of the square, making a smaller square inside the larger square.
Next, you add four more dots at the midpoint of each side of the smaller square, making an even smaller square. Finally, you add four more dots at the midpoint of each side of the smallest square, making the smallest square yet.
Now, you can see that every dot is connected to three other dots, and the lines form a very interesting pattern that looks kind of like a spiderweb or a snowflake.
The grünbaum-rigby configuration is interesting because it is a very symmetrical way of arranging points and lines, and it has some unique mathematical properties that make it interesting to people who study math.