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Nabu's Knee-knocker
Shapes formed by joining four identical
grid squares into a "T" are called T-tetrominoes.
Show that several T-tetrominoes can be used to cover a 4 x 4 grid
board, but not a 5 x 5 grid board and not a 6 x 6 grid board.
Note: A cover should just cover the squares of the grid board with
no extra squares.
You may want to print this page and do your
work in the blank space below.
Scroll down the page to find a hint and the
solution to this problem.
Are you stumped? Do you need a hint? If so, click the Hint
button.
Do you think you've figured out all the solutions? If so, then
click the Solution button.
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