squares & cubes get all the attention

inspired by [that one post about powers of 4 a few months ago](https://www.reddit.com/r/mathmemes/comments/1j434cp/if_the_power_of_2_is_called_squared_and_power_of/) (yes, i know the 2D orthoplex isn't a hexagon, but it would've said that 3 squared = 13 otherwise, & i needed somewhere to put the hexagon)