What is the name of this way of splitting blocks?

Question

Layout

Example 1

Example 2

Example 3

I constantly see similar divisions of blocks on sites, but I just can’t google what this technique is called and how to use it correctly. All I know is what is done with svg. Perhaps there are articles or videos on this topic?

Answer 1

You can also use photoshop (background). Correct me if I didn't give the correct answer.