Here is my Tree class from today:

public class Tree {
    Triangle triangle1;
    Triangle triangle2;
    Triangle triangle3;
    Square trunk;

    Tree() {
        triangle1 = new Triangle();
        triangle1.makeVisible();
        triangle2 = new Triangle();
        triangle2.moveUp();
        triangle2.makeVisible();
        triangle3 = new Triangle();
        triangle3.moveVertical(-40);
        triangle3.makeVisible();
        trunk = new Square();
        trunk.changeSize(20);
        trunk.moveHorizontal(-110);
        trunk.moveVertical(80);
        trunk.changeColor("black");
        trunk.makeVisible();        
    }
    
    void moveLeft() {
        triangle1.moveLeft();
        triangle2.moveLeft();
        triangle3.moveLeft();
        trunk.moveLeft();
    }
}