public boolean isRectangular ( ) { return ( _isPolygonal ) && ( _rulesSize <= 5 ) && ( _coordsSize <= 8 ) && ( _coords [ 1 ] == _coords [ 3 ] ) && ( _coords [ 7 ] == _coords [ 5 ] ) && ( _coords [ 0 ] == _coords [ 6 ] ) && ( _coords [ 2 ] == _coords [ 4 ] ) ; }
Returns true if this area is rectangular .