MathDB
AMC 8 2005 Problem 15

Source:

July 23, 2011
geometryperimeter

Problem Statement

How many different isosceles triangles have integer side lengths and perimeter 23?
<spanclass=′latex−bold′>(A)</span> 2<spanclass=′latex−bold′>(B)</span> 4<spanclass=′latex−bold′>(C)</span> 6<spanclass=′latex−bold′>(D)</span> 9<spanclass=′latex−bold′>(E)</span> 11 <span class='latex-bold'>(A)</span>\ 2\qquad<span class='latex-bold'>(B)</span>\ 4\qquad<span class='latex-bold'>(C)</span>\ 6\qquad<span class='latex-bold'>(D)</span>\ 9\qquad<span class='latex-bold'>(E)</span>\ 11
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