The converse of a statement is formed by swapping the hypothesis and the conclusion.
For the original statement: "If the figure is a triangle, then the figure has three sides."
The hypothesis is "the figure is a triangle" and the conclusion is "the figure has three sides."
To find the converse, we swap these: "If the figure has three sides, then the figure is a triangle."
So, the correct answer is:
If the figure has three sides, then the figure is a triangle.