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Author: Annie Fetter
Description: teacher support active problem Geometry, difficulty level 3. The vertices of quadrilateral ABCD are at the points A:(1,2), B:(2,-2), C:(-5,-4), and D(-6,0). What's the most specific name you can give to this quadrilateral?

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Problem page: http://mathforum.org/librarypow/puzzles/index2.ehtml?puzzle=3387
Support page: http://mathforum.org/pow/support/geopow/20050418geo.teacher.html
Solution page: Problem #3387

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