Relative poverty is not having enough money to maintain the standard of living that is customary in that society.
The absolute poverty line is found by finding the total cost of all the essential resources that an average human adult consumes in one year. Determined by the world bank. This is adjusted for purchasing power parity. In other words, it applies internationally. The absolute american poverty line is just the international absolute poverty. And there's no need for a relative poverty line, it's rather a nonsense concept.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.