I'm planning on buying a new couch, but I am wanting to map out in my living room to see how it would fit first. There's one odd shaped piece where the manufacturer did not provide all the length measurements. From what I can tell, there's not enough information to find the three missing lengths and the two missing angles. If there is, I would greatly appreciate an answer or explanation on how to find the missing sides. I have attached images of the manufacturers diagram and my own sketch.