Answer
converse (true): If the circumference of a circle is $2\pi r$, then its radius is r.
inverse (true): If a circle's radius is not r, then its circumference is not $2\pi r$.
contrapositive (true): If the circumference of a circle is not $2\pi r$, then its radius is not r.
Work Step by Step
Write the converse by switching the hypothesis and conclusion.
Write the inverse by negating both the hypothesis and conclusion.
Write the contrapositive by both switching and negating the hypothesis and conclusion.
