L-squared - a square that shows a 90-degree angle. It’s the math version

a square that shows a 90-degree angle. It’s the math version of a middle finger.

The teacher drew an L-squared on the board. It looked like a math class went to war.

I used an L-squared in my geometry test. The teacher gave me extra credit for being extra annoying.

My math teacher said L-squared was the worst part of the day. I agreed.