All shapes can be classified into 3D and 2D types.
3D- Three-dimensional model that displays a picture or item in a form that appears to be physically present with a designated structure. Essentially, it allows items that appeared flat to the human eye to be display in a form that allows for various dimensions to be represented. These dimensions include width, depth, and height.
2D- A shape with only two dimensions (such as width and height) and no thickness. Appears flat to a persons eyes.
The imposing western façade of Notre-Dame is a harmonious ensemble based on an play between vertical and horizontal lines: four powerful buttresses rise to the towers as an attempt to reach towards heaven whilst two wide horizontal strips seem to bring the sanctuary made by men down to earth.
https://frenchmoments.eu/west-facade-of-notre-dame-cathedral-paris/
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