Posted by **brianna** on Sunday, September 23, 2012 at 3:12pm.

ok this past week i was sick 4 2 days and i need 2 finish this math test by today!!!! and i didn't get 2 learn anything like u know, not practive soo plz anwser these questions: 1.what is a concave polygon 2.what are concentric cicles? 3. what does this mean: a polygon that is CONGRENT to the one shown below there is a square below the words and srry about this but wut does perpendicular mean again? thank you!!!!!!!

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