Problem Description Draw a circle with three random points on the circle. Connect the points to form a triangle. Display the angles in the triangle. Use the mouse to drag a point along the perimeter...

75451/Code/Solution.java
75451/Code/Solution.java
import java.awt.Point;
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.scene.Scene;
import javafx.scene.input.MouseDragEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.text.Text;
import javafx.stage.Stage;
public class TriangleOnCircle extends Application 
{
    //defining all required UI components
    private Circle circle; //big circle
    private Circle point1, point2, point3;//points
    private Line line1, line2, line3; //lines to connect points
    private Text angle1Txt, angle2Txt, angle3Txt; //to display angles between points
    @Override
    public void start(Stage primaryStage) 
    {
        //creating a circle with radius 150
        circle = new Circle(150);
        //setting (250,250) as the center of the circle
        circle.setCenterX(250);
        circle.setCenterY(250);
        //no fill color
        circle.setFill(Color.TRANSPARENT);
        //black outline
        circle.setStroke(Color.BLACK);
        //initializing three small red circles to represent points
        point1 = new Circle(10);
        point1.setFill(Color.RED);
        point1.setStroke(Color.BLACK);
        //adding a mouse dragged listener to point1, to call movePoint method,
        //passing the point object and mouse event object
        point1.setOnMouseDragged(e -> movePoint(point1, e));
        point2 = new Circle(10);
        point2.setFill(Color.RED);
        point2.setStroke(Color.BLACK);
        point2.setOnMouseDragged(e -> movePoint(point2, e));
        point3 = new Circle(10);
        point3.setFill(Color.RED);
        point3.setStroke(Color.BLACK);
        point3.setOnMouseDragged(e -> movePoint(point3, e));
        //initializing default points and angles
        initialize();
        //updating the view
        update();
        //creating a pane and adding everything in order
        Pane root = new Pane(circle, line1, line2, line3, angle1Txt, angle2Txt, angle3Txt, point1, point2, point3);
        //setting up a scene and displaying it
        Scene scene = new Scene(root, 500, 500);
        primaryStage.setScene(scene);
        primaryStage.setTitle("");
        primaryStage.show();
    }
    //method to initialize every att...