Answer:
Contrapositive: if a polygon does not have more than 3 sides, then it is a triangle. Since it is a true statement, the contrapositive is a true statement, the original statement must be a true statement.
Step-by-step explanation:
Original statement: if a polygon has more than three sides, then it is not a triangle.
Let P = a polygon has more than three sides
Let Q = it is not a triangle
Conditional statement: If P, then Q
Contrapositive statement: if not P, then not Q.
If a conditional statement is true, then the contrapositive is true.
If a contrapositive statement is true, then the contrapositive is true