ShapesThing.java
package shapes;


public class ShapesThing {
    public static void main(String[] args){
        SSquare square = new SSquare(400);
        System.out.println("square = " + square.toString());
        System.out.println("area of square" + square.area());
        System.out.println("perimeter of square " + square.perimeter());
        System.out.println("diagonal of square " + square.diagonal() );
        SCircle disk = square.inscribingCircle();
        System.out.println("disk = " + disk.toString());
        System.out.println("area of square" + square.area());
        System.out.println("area of disk" + disk.area());
        System.out.println("perimeter of square" + square.perimeter());
        System.out.println("perimeter of disk" + disk.perimeter());
        SSquare diamond = disk.inscribingSquare();
        System.out.println("diamond = " + diamond.toString());
        System.out.println("area of diamond " + diamond.area());

    }
}