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2001 AMC 10 Problems/Problem 5

Revision as of 12:25, 16 March 2011 by Pidigits125 (talk | contribs) (→‎Problem)

Problem

How many of the twelve pentominoes at least one line of symmetry?

$\textbf{(A)}\ 3 \qquad \textbf{(B)}\ 4 \qquad \textbf{(C)}\ 5 \qquad \textbf{(D)}\ 6 \qquad \textbf{(E)}\ 7$

Solution

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