Plzzzzzzzz rlly need help 10 plus points

What’s the value of x?

What is the total interior of this polygon?

And what’s the name of this polygon? Plz need help!!?

Plzzzzzzzz rlly need help 10 plus points Whats the value of x What is the total interior of this polygon And whats the name of this polygon Plz need help class=