Uploaded July 2026 | Updated September 2026, 2 weeks ago

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The intersection of the strings drawn from two walls happens to be right at the top of the person's head. How tall is the person? This is a classic mathematical brain teaser known as the Crossed Ladders Problem en.wikipedia.org/wiki/Crossed_ladders_problem, framed with a fun real-world twist. I will show you the shortcut of solving it and then the proof with similar triangles!

I saw this math puzzle is from Threads
threads.com/@mascolin.c.namid/post/DaSJ__UiUjR?xmt=AQG0cJNJx7FJIoyAjDLlhcP4ptrYX0CIpoH2qpoG2iZUn1c5Otesakik4TpPzMgAW6aNCT8W&slof=1

0:00 math puzzle: how tall is the person
2:23 the proof

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#math #algebra #mathtutorials