I have the measurements of the four sides of an irregular polygon and I need to find out the size of each interior angle.
I know the sum of the angles is 360 degrees but because it's not a regular polygon I don't know how to calculate each angle.
The measurements of each side are 882.9, 80, 576.8 and 293.3.
However, it is confirmed that one of the angles is 90 degrees. How do I find the other 3 angles? Please refer to the image below for reference.