reflectional

Example:The design of the house is symmetrical, with a matching living room and bedroom on either side of the hallway.

Definition:Having the parts on either side of a dividing line or plane identical in size, form, and relative position

Example:The two sides of the river formed a mirror-image of each other.

Definition:Resembling a mirror image, often used to describe objects that are exactly similar but face in opposite directions or have their left and right sides reversed