A hypercube is a cube generalised to higher dimensions. A 4D hypercube (tesseract) has 16 vertices, 32 edges, 24 squares, and 8 cubes.
Spin the solid
Cube
faces
6
6
edges
12
12
vertices
8
8
V − E + F = 8 − 12 + 6 = 2
drag to rotate
You can't really visualise a 4D cube — but you can project it to 3D, then to 2D on your screen, and see its shadow.