Java Point Inside a House

import java.util.Scanner;


public class PointInsideAHouse {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double X = input.nextDouble();
        double Y = input.nextDouble();

        boolean bottomLine = ((17.5 - 12.5)*(Y - 8.5) - (8.5 - 8.5)*(X - 12.5)) > 0;
        boolean leftLine = ((17.5 - 12.5)*(Y - 8.5) - (3.5 - 8.5)*(X - 12.5)) > 0;
        boolean rightLine = ((22.5 - 17.5)*(Y - 3.5) - (8.5 - 3.5)*(X - 17.5)) > 0;

        if (bottomLine == false && leftLine == true && rightLine == true) {
            System.out.println("Inside");
        }
        else {
            if (X >= 12.5 && X <= 17.5) {
                if (Y >= 8.5 && Y <= 13.5) {
                    System.out.println("Inside");
                }
                else {
                    System.out.println("Outside");
                }
            }
            else if (X >= 20.5 && X <= 22.5) {
                if (rightLine) {
                    if (Y >= 8.5 && Y <= 13.5) {
                        System.out.println("Inside");
                    }
                    else {
                        System.out.println("Outside");
                    }
                }
            }
            else {
                System.out.println("Outside");
            }
        }
    }

}