Answer:
Left
Step-by-step explanation:
For a contrapositive, we switch both the hypothesis and the conclusion and then negate them
Switch.
"If it is a quadrilateral, then it is a rectangle"
Negate
"If it is not a quadrilateral, then it is not a rectangle"
The picture on the left says if it is not a quadrilateral, then it belongs to the group of not rectangles
