a. Since point I is on the perpendicular bisector of line segment FC, it means that point I is equidistant from points F and C. Therefore, the correct response is:
They are the same distance from point I.
b. The theorem that applies here is the Perpendicular Bisector Theorem, which states that any point on the perpendicular bisector of a segment is equidistant from the endpoints of that segment. In this case, points F and C are the endpoints of segment FC, and point I lies on the perpendicular bisector, thus it is equidistant from both F and C.
c. Another point on the diagram that would also be equidistant from points F and C could be any point on the line segment connecting F and C itself or any point along the entire perpendicular bisector GH. This is because all points on the perpendicular bisector of a segment are equidistant from the segment's endpoints. Therefore, any point on line GH will also satisfy the condition of being equidistant from points F and C.