Afigure is a quadrilateral if and only if it is a polygon. true or false?

This is not true, a quadrilateral is a four sided figure. A triangle is a 3 sided figure and is a polygon. You can also use the key words only and never in a true or false statement to determine if it is true or false. Always, never and only generally mean its false.

I think it's 4... not so sure though

Step-by-step explanation: