Answer:

The statement "An isosceles triangle has two congruent sides" can be expressed in symbolic form as "If x is an isosceles triangle, then x has two congruent sides."

The contrapositive of this statement is "If x does not have two congruent sides, then x is not an isosceles triangle."

The converse of this statement is "If x has two congruent sides, then x is an isosceles triangle."

The inverse of this statement is "If x is not an isosceles triangle, then x does not have two congruent sides."