Pentomino Puzzles

Place the 12 different pentominoes in the grid below so that: (1) no pentominoes overlap, or cover triangles, (2) each pentomino or triangle that is not at the bottom is supported by another pentomino, so that gravity would not cause any of them to fall. For example, here is a solved puzzle:

Each puzzle below has a unique solution. All puzzles copyright Erich Friedman, 2001.


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