Can I add a sprite or some material that renders on a custom imported mesh

My background is in mechanical engineering so I wanted to use tools I’m familiar with to create complex geometry in my games. I’m basically just starting out if that isn’t obvious already. I used Fusion 360 to create a plane and exported to FBX. When I import into unity it imports a mesh filter and a mesh renderer. No problems so far. However, I cannot simply add a sprite to this object to “fill” in this mesh. How does one render a material within the mesh boundary to render something on the screen? Thanks in advance.

Here is a picture of the simple mesh I’m working with.


Here is how it imports as
8437424--1117859--Image 9-13-22 at 4.15 PM.jpg

Geometry includes positional information as well as UV information (and a bunch of other info too).

UV information is typically used to map a texture onto the geometry.

If you want examples you’re welcome to look at my MakeGeo package.

MakeGeo is presently hosted at these locations:

https://bitbucket.org/kurtdekker/makegeo

https://github.com/kurtdekker/makegeo