The constellation Cepheus, representing the King Cepheus, doesn't have a specific geometric shape like a square or a triangle. It's more of a loose, irregular shape.

Here's why:

* Star arrangement: The stars that make up Cepheus are not arranged in a neat pattern like some other constellations.

* Ancient mythology: The shape was based on the image of the king, which is more abstract than a simple geometric form.

How to visualize Cepheus:

* The House Shape: You can imagine Cepheus as a lopsided house shape with a large star (Alderamin) marking the top of the house.

* King on his throne: The brightest stars form a sort of "W" shape, which some people interpret as the King sitting on his throne.

Ultimately, the shape of Cepheus is open to interpretation and can be seen in different ways depending on individual perception.