Although 2D objects don't have a depth parameter, they can quickly become 3D using a modeling operation called Extrusion.
How to extrude a 2D object
- Select the object you want to extrude.
- Go to the Shape panel on the right sidebar and add value to the Extrusion property by typing or sliding to the desired amount.
Tips when working with extrusions
- Change the lighting type to Lambert Phong Physical, or Toon if you want it to receive light/shadows.
- Ensure that you select
fronton the Visibility Panel; this will improve surface shading on the object when enabling shadows.