KöMaL 2008 B4112
A billiards ball at corner of a rectangular billiards table ABCD is struck. It starts moving along the angle bisector. It rebounds from the sides , and finally , and collides head-on with a ball that is at the centre of the rectangle. In what other direction is it possible to strike the ball at point , so that it rebounds from three different sides and then hits the ball at the centre head-on?
Official text KöMaL. Quoted with source.
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