What Houzzers are commenting on:
symmetrical balance- the chairs are placed symmetricaly around the table.
Radial Balance. The chairs are all identical and are going outward from the table in the middle of the room.
Radial Balance The four chairs goes around the table.
This photo shows radial balance; it has a central point( the flowers/table) and everything radiates out from that central point.
Symmetrical balance- arranging elements on either side of the center of a composition in an equally weighted manner
Radial Balance is almost circular with times arranged around a center Alonzo point extending either inward or outward. For example in this room the table is the center and the couches are around it in a circular motion.
Symmetrical Balance: the exact chairs across from each-other, and revolving around the table, is an example of symmetrical balance, which creates a sense of dignity.