64=65?

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    CucumberWistfulDMarauderDeuceLemurianprzxqgl Recent comment authors
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    nobody
    Guest
    nobody

    *head explodes*

    Someone who knows math
    Guest
    Someone who knows math

    Look carefully at the inclines.
    3/8 = 15/40 != 16/40 = 2/5

    There’s a very narrow empty space between the upper and the lower part in the “65” picture, and it has the same surface as one box.

    bytehead
    Member

    ^^ What he said.

    Lemurian
    Member

    Yeah I noticed it too, good eye.

    przxqgl
    Member

    i’ve known about this fallacy ever since i was 5 years old… 8/

    MarauderDeuce
    Member

    I’ve never taken the time to work this one out but I’ve always assumed that there had to be some tricking the eye thing happening with this one.

    WistfulD
    Member

    Not so much a trick of the eye so much as a trick of math. Shaving fractions to make up for the missing square.

    Cucumber
    Guest
    Cucumber

    arctan(3/8) =! arctan(2/5), this is silly. The smallest angle of the green triangle is 20.556 degrees, where the angle of the triangular part of the orange section, meaning if you cut it into a square and triangle, is 21.801 degrees. These shapes don’t even fit together. If the angles were the same, then yes, I’d be shitting bricks.



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