I need to draw the following spider web using python.

[Spider web complete - what I need to draw](https://i.stack.imgur.com/QhS89.png)

I've googled my way to turtle, and have made the following

[Spider web incomplete](https://i.stack.imgur.com/JDWjn.png)

So, what I need help with is how to make the straight lines into curves. I've been trying with `circle()`, but can't get it to work the way I want. Any tips, either with or without turtle is appreciated