Symmetric (adjective)

1. Having a corresponding or similar form on either side of a central line or point.
2. Having a balance of proportions or elements.

Origin:

From the late latin symmetricus, from greek symmetrikos, from symmetria "agreement, symmetry".

Examples:

1. The room has symmetric windows on either side of the door.
2. The building is symmetric in design.
3. The flower has symmetric petals.
4. The face is symmetric, with both sides being mirror images of each other.
5. The graph of the equation is symmetric with respect to the y-axis.