Slide 19 of 71
Notes:
Given the freedom to place points wherever we want, we can say that the figure on the right is a cube because each of its points is connected to the same neighbors (adjacents) as its corresponding point on the figure at the left which we recognize as a cube. For instance, point A is connected to points B, C, and E in each case. Note: the lines in the figure on the right do not connect at the center, they merely cross each other much like CD and BF on the left.
