COMPLEX SHAPES

Question

WHAT IS THE PERIMETER OF A SHAPE WITH EIGHT SIDES AND MISSING 2 NUMBERS. THE GIVEN NUMBERS ARE 16,26,31,26,18 AND 9. WHAT ARE THE MISSING TWO NUMBERS?

Answer 1

There are an infinite number of correct answers.  Is there a picture?  Are some angles marked as measured (for example, right angles marked with a square?)