"Impossible" Math Problem Leaves Students In Tears

A kite is placed in a square, can you figure out one of its angles? I made a video for this "impossibly hard" problem from a New Zealand maths exam. But it turned out my proof had a flaw, which some of you pointed out in the comments! It turns out the problem still has the same answer which is interesting. So in this video I correct the flaw and show a correct proof. I also give another way to find the answer which is elegant in its own right, suggested by another comment.

Blog post for this video
https://wp.me/p6aMk-5nY

Original video with flawed proof
   • "Impossible" Math Problem Leaves 15 Y...  

Diagram from Christopher Night showing diagonals are not equal to the sides
https://imgur.com/qJxdwXW

Thanks to comments from:
Christopher Night
   • "Impossible" Math Problem Leaves 15 Y...  

Steve's Mathy Stuff
   • "Impossible" Math Problem Leaves 15 Y...  

Joseph Lombardo
   • "Impossible" Math Problem Leaves 15 Y...  

Ali A
   • "Impossible" Math Problem Leaves 15 Y...  

Thanks to all patrons! Special thanks to:
Shrihari Puranik
Kyle

I made another video for this exam about the parabola problem:    • "Impossible" problem leaves students ...  

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