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Mathematics 23 Online
OpenStudy (cmtboy2):

If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called?

OpenStudy (cmtboy2):

If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called? A. delta point B. distance system C. coordinate system D. reference point

OpenStudy (anonymous):

D.reference point

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