2025 AMC 8 Problems/Problem 11
Problem 11
A consists of four squares connected along their edges. There are five possible tetromino shapes,
,
,
,
, and
, shown below, which can be rotated or flipped over. Three tetrominoes are used to completely cover a
rectangle. At least one of the tiles is an
tile. What are the other two tiles?
and
and
and
and
and
Solution 1
The rectangle allows for 4 possible places to put the S piece, with each possible placement having an inverted version.
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