caption: The image shows a drawing of a room with a door and a window, and at the bottom of the image there is some text which reads "Tetrahedron". The room is filled with various objects, including a bed, a desk, and a chair. The walls are decorated with intricate designs and the floor is covered with a patterned rug. The door is open, revealing a glimpse of the interior of the room. The text is written in a bold font and is surrounded by a decorative border.