Yesterday I made a maple-pear upside-down cake for my Norwegian relatives. I've always made this recipe in a 9" round Pyrex cake dish, but my brother only had a glass dish in the shape of an ellipse. It was the perfect capacity, but when it came time to cut pieces I wondered how to divide the cake into equal wedges.

Should the cuts meet in the center, or at one of the foci? And depending upon the position of each piece, how can one determine the angle of the wedge?

This is shop math, sort of, and I suspect it is a difficult problem, something to chew on during the holiday season.

Should the cuts meet in the center, or at one of the foci? And depending upon the position of each piece, how can one determine the angle of the wedge?

This is shop math, sort of, and I suspect it is a difficult problem, something to chew on during the holiday season.

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