I present you, the ANGLE OF DEPRESSION!
Ok... This is actually a geometric term, and there is also an ANGLE OF ELEVATION!
I'm studying for CST Geometry tomorrow, so I guess writing this is a way to maintain my sanity.
I wish you and myself a lot of luck!
P.S. Great Depression interviews http://www.kennesaw.edu/history/Conversations/cwh%20great%20depression.htm
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