ClipArt ETC
Military formation of the Romans, also agmen quadratum. Square formation with no troops in the middle.

Hollow Square

Military formation of the Romans, also agmen quadratum. Square formation with no troops in the middle.

An illustration of a hollow square (square within square) with outer square having a side of 2s+6 and inner square having a side of s-2. Illustration could be used for calculating area.

Hollow Square with Dimensions of 2s+6 and s-2

An illustration of a hollow square (square within square) with outer square having a side of 2s+6 and…