JavaFX Polyline create hangman

import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Arc;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Polyline;
import javafx.stage.Stage;

public class Main extends Application {
   @Override/*from  w  ww  .ja  va  2s .  c om*/
   public void start(Stage primaryStage) {
      Pane pane = new Pane();

      Polyline polyline1 = new Polyline();
      pane.getChildren().add(polyline1);
      polyline1.setStroke(Color.BLACK);
      ObservableList<Double> list = polyline1.getPoints();
      double x1 = 40.0;
      double y1 = 190.0;
      double y2 = 20.0;
      double x3 = 125.0;
      list.addAll(x1, y1, x1, y2, x3, y2, x3, y1 * .60);

      Polyline polyline2 = new Polyline();
      pane.getChildren().add(polyline2);
      polyline2.setStroke(Color.BLACK);
      ObservableList<Double> list2 = polyline2.getPoints();
      list2.addAll((x1 + x3) * .5, y1 * .5, x3, y1 * .25,
         x3 + (x3 - x1) * .5, y1 * .5);

      Polyline polyline3 = new Polyline();
      pane.getChildren().add(polyline3);
      polyline3.setStroke(Color.BLACK);
      ObservableList<Double> list3 = polyline3.getPoints();
      list3.addAll((x1 + x3) * .6, y1 * .80, x3, y1 * .60,
         x3 + (x3 - x1) * .3, y1 * .80);

      // Create a circle and set its properties
      Circle circle = new Circle(x3, y1 * .25, 15);
      circle.setFill(Color.WHITE);
      circle.setStroke(Color.BLACK);
      pane.getChildren().add(circle);

      // Create an arc and set its properties
      Arc arc = new Arc(x1, y1 + 1, 25, 15, 0, 180);
      arc.setFill(Color.WHITE);
      arc.setStroke(Color.BLACK);
      pane.getChildren().add(arc);

      // Create a scene and place it in the stage
      Scene scene = new Scene(pane, 200, 200);
      primaryStage.setTitle("Exercise_14_17");
      primaryStage.setScene(scene);
      primaryStage.show();
   }
}