Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Some examples of solids that incorporate 2D shapes are mentioned in this video by Sanchit — for example ...

A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example, in the prism ...

A trademark registration for the shape of a product (usually in the form of a drawing or 3D illustration) can be useful, particularly where the product is recognised predominantly by its distinctive ...