Answer:
7. Quadrilateral
8. Trapezoid
9. Quadrilateral
Pls mark me as Brainiest if that helped you :)
Step-by-step explanation:
It depends on the question . What is the question asking about?
I mean, I don't know how to explain a generic way to solve this. Ask me about the specific train of thought if you are interested:
7 * 18 + 45 / 3 - 2 = 139