So I created some geometric art inspired by string art. I feel like there's a name for this type of shape/image. I'm asking on mathematics.stackexchange because the process of generating the below images is very mathematical. To produce one of the shape in the $i^{th}$ column and the$j^{th}$ row using $n$ lines, for each integral value of $k$ from $0$ to $n-1$ draw a line segment connecting point $p_{i\times k}$ to point $p_{(i+j)\times k}$, where any point $p_x = (\cos{2\pi \frac{x}{n}},\ \sin{2\pi \frac{x}{n}})$
The below images were generated each using $1009$ semi-transparent line segments. I choose 1009 because I wanted a prime number to minimize overlapping line segments, and because I wanted at least 1000 lines.
Anyway!!! Do the below images/shapes have a name? I've seen the top rightmost shape before in string art, and the same with some of the others. The rest are just a generalization of that process. What is this process called?
Here is a rendering with $i=20$, $j=19$, and $n=15013$
