//################################################################
//
// Rectangles.java
//
// Sample Run:
//
// Please enter lower left  x: 2
// Please enter lower left  y: 2
// Please enter upper right x: 5
// Please enter upper right y: 4
//
// Horizontal side = 3.0
// Vertical   side = 2.0
// Perimeter       = 10.0
// Area            = 6.0
//
//################################################################

import java.util.Scanner;

public class Rectangles
{
   public static void main (String[] args)
   {
		Scanner scan = new Scanner(System.in);
		
		double x1, y1;
		double x2, y2;
		
		System.out.print("Please enter lower left  x: ");
		x1=scan.nextDouble();
		
		System.out.print("Please enter lower left  y: ");
		y1=scan.nextDouble();
		
		System.out.print("Please enter upper right x: ");
		x2=scan.nextDouble();
		
		System.out.print("Please enter upper right y: ");
		y2=scan.nextDouble();
		
		// Take absolute values. This will work even if the user 
		// entered the corners in the wrong order.
		double hSide= Math.abs(x2 - x1);
		double vSide= Math.abs(y2 - y1);
		
		double perimeter= hSide*2.0 + vSide*2.0;
		double area = hSide * vSide;

		System.out.println();
		System.out.println("Horizontal side = " + hSide);
		System.out.println("Vertical   side = " + vSide);
		System.out.println("Perimeter       = " + perimeter);
		System.out.println("Area            = " + area);
	}
}