Today is 10 December 2019, the 344th day of the year.



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Uncle Otto lives in an unusual house. The south facing window, for instance, is made in the shape of a right triangle. One day Uncle Otto decides to put some reflective film on the glass, the kind that you can see through from one side but which is reflective on the other side. He carefully measures the window and then cuts out a large triangle of reflective film in just the right shape. However, when he tries to put the film on the glass, he discovers – horror of horrors! – that he has cut the film from the wrong side, so that to make the triangle of film fit the triangle of glass, he would have to put the reflective side towards the inside of the house.

After thinking it over, Uncle Otto decides that instead of going to the hardware store and buying more film, he'll just cut the triangular piece he's got into enough smaller shapes so that when he puts them back together the right way, they'll fit the window properly, with the reflective side pointing out.
Today's challenge: Can you help Uncle Otto do this? (Don't assume anything about the triangle other than that it has one right angle.)


Solution to yesterday's challenge

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