Strophoids are a kind of curve that has a special shape.
Strophoids are a cool thing to learn about in math.
Examples:
The strophoids look like a wave.
We learned about strophoids in math class.
The strophoids are on the math test.
The strophoids are not as wiggly as the squiggles.
The strophoids are the coolest curves in math.
I drew strophoids on my paper.