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Murderous Maths

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Emmett has been reading and re-reading and re-reading all of the Murderous Maths books, and enjoying them immensely. He told me that you can't have a right triangle with an obtuse angle in it. I, being a geek and kind of mean, said, "Well, you can't unless the triangle is on the surface of a sphere." We've talked about triangles on spheres before, but I was a bit surprised when he confidently responded, "Correct!" His dad, not to be outdone, wondered about a triangle on a hyperbolic plane (shaped like a pringle), but shortly concluded that it could only be done in spaces with positive curvature. Emmett has it coming at him from all sides...
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This kid is hilarious

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Today in the car, Henry and I were singing.  I started in on "The Twelve Days of Christmas" and when I finished the verse that starts with "Three French Hens" Henry said, "Wait, three French heads ?"  He seemed relieved when he found out it was "Three French Hens."  We went on to compose our own Halloween version of the song featuring "Three French Heads," though. We were in the car because I was thinking about buying new skis for Luke and Henry came with me to the ski shop.  Luke didn't want to come pick them out, so I thought we could give them to him for Christmas.  When Henry heard that, he said, "But I think he'll know what they are from the wrapping."  True enough.  Skis would be difficult to conceal with wrapping paper.
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April 8, 2024

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My sister's husband, Dean, got the most amazing video of our eclipse. We were so very lucky to have thin clouds for most of the period of totality. Jump ahead to 4:25 to hear the crowd as we head into totality. 
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