2000 AMC 10 Problems/Problem 5
Revision as of 19:03, 8 January 2009 by 5849206328x (talk | contribs)
(a) Clearly does not change, as . Since does not change, neither does .
(b) Obviously, the perimetar changes.
(c) The area clearly doesn't change, as the base and height remain the same.
(d) The bases and do not change, and neither does the height, so the trapezoid remains the same.
Only changes, so .