I was about to answer but I’m really bad at math and didn’t want to give you the wrong answer. Hope you find what your looking for!
Regular polygons have all angles equal and all sides equal, however irregular polygons fail to follow one of the laws.
Hey there!
Use this formula:

Remember this formula.
Now, let's solve the given problem.

Hope this helps you!
~Just a joyful teen

Hope this helps and have a fantabulous day! :)
Are you kidding are you sure you want this