This is a monthly chart of the value of the US dollar.
Key Points:
1. Thick green line and red circles: major area of support/resistance at ~92.5
2. ~41.57% decline from Jan-02 to Mar-08 (bottoming at ~70.72 black line)
3. Showing the level dollar would reach if we had the same drop and assuming we topped Jan-17 (dollar value would = 60.68)
4. Blue trend lines: historical downward trend lines
5. 3 Black lines show key areas of interest where we may hit: (1) Prior Mar-08 bottom, (2) Area within blue trend lines, (3) Same % drop as Jan-02 thru Mar-08
6. Sep-18 to Feb-20 shows 2 black lines depicting a rising wedge which has since broken to the downside as expected
Fibs would also be interesting to look at
It is also important to note that there has been an interesting argument made regarding the rise in value of crypto relative to loss in value of the dollar