How to lie using visual proofs

How to lie using visual proofs

Three false proofs, and what lessons they teach.
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Time stamps:
0:00 – Fake sphere proof
1:39 – Fake pi = 4 proof
5:16 – Fake proof that all triangles are isosceles
9:54 – Sphere "proof" explanation
15:09 – pi = 4 "proof" explanation
16:57 – Triangle "proof" explanation and conclusion


These animations are largely made using a custom python library, manim. See the FAQ comments here:

You can find code for specific videos and projects here:

Music by Vincent Rubinetti.

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3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe:

Various social media stuffs:


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