The true statement is:
Three congruent sides will always form a triangle.
This is based on the fundamental properties of triangles, where if all sides are equal in length, they will indeed form a triangle (an equilateral triangle).
The other statements are not necessarily true:
- Two congruent sides with a third side larger than the congruent ones will not form a triangle, due to the triangle inequality theorem.
- Three sides of different measures may or may not form a triangle, depending on their lengths in relation to one another.