State whether the statements are:

(A) Always True (S) Sometimes True (N) Never True

Make sure to explain the reasoning for your selection. It helps to draw a diagram for each statement.

1. In a circle, congruent chords are equidistant from the center.
2. If a triangle is inscribed in a circle and one of its sides is a diameter, then the triangle is an isosceles triangle.
3. If a central angle and an inscribed angle of a circle intercept the same arc, then they are congruent.
4. Tangents to a circle at the endpoints of a diameter are parallel.
5. Two concentric circles have at least one point in common other than the center.