Clark pumped in 15 points, Freeman donated 14 and Hollis Thompson and Nate Lubick each added 11 points for the Hoyas (9-1).
Georgetown jumped off to a 16-5 lead and never looked back in the one-sided affair. After the Mountaineers moved to within nine points at 41-32, the Hoyas scored the first seven points of the second half to ice the win.
Jeremi Booth and Donald Sims each popped in 14 points for Appalachian State (3-4).
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