Now let's add a ground plane object into the scene:
- Within the Hierarchy panel Create menu (or main GameObject menu), choose 3D Object | Plane.
A default white plane is added to the scene, resting centered on the ground plane at position (0, 0, 0) (if not, select Reset from the Inspector Transform gear icon).
At a scale of (1, 1, 1), Unity's plane object actually measures 10 by 10 units in X and Z. In other words, the plane's own size is 10 x 10 and its transform scale is 1.
The cube is centered at position (0, 0, 0), just like the plane. But maybe it doesn't look like it to you. The Scene panel may be showing a perspective projection that renders 3D scenes onto a 2D image. The perspective distortion makes the cube appear ...
