To dream of a pentagon represents people or situations that defy all expectations. Too difficult or too different. Noticing that a situations feels like preoccupied with change all the time. Something you just don’t know what to do about. A change that doesn’t make sense.
To find yourself walking down a pentagon shaped hallway represents a path in life or transitional period that you don’t understand at all. You don’t why something is happening or what you’re supposed to do about it.