Final answer:
A converse is a statement formed by reversing the hypothesis and conclusion of a conditional statement in mathematics. The converse of 'If you are frowning, then you are sad' is 'If you are sad, then you are frowning'.
Step-by-step explanation:
In mathematics, a converse is a statement formed by reversing the hypothesis and conclusion of a conditional statement.
The given statement is If you are frowning, then you are sad. To find its converse, we need to reverse the hypothesis and conclusion. The converse of the given statement is If you are sad, then you are frowning.
It's important to note that the converse may or may not be true. While the original statement is true, the converse is not necessarily true.