Find the ratio x:y. (lengths of sides in geometric figure)

Did you download the paint.net you are using or are you using it online ?
Why on earth would I use an online version (if there even is such a thing; which I doubt!)? 🤷‍♂️

It's not exactly a huge program and it alerts you whenever there are updates available (which are safely installed by simply agreeing to the program updating itself) so it's always up-to-date.

There are also myriad plugins available to enhance and add to the features already available in the program too. 😉

Some guy has made a couple of short videos (worth a watch) about it here & here and you can find many plugins just by Googling for them.
 
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