Double-click on the movie to PLAY.

Click once to PAUSE.

Double-click again to return to the START of the movie.

M3+

Here (left) we achieve the same partioning by rotating the square through a half-turn (180˚).

Again, are the 4 sections congruent?







It is interesting to consider other overlapping shapes. For example, what if we change the squares into rectangles? NEXT