Exetools - 64=65?

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Rhodium

08-20-2004 14:40

64=65?

http://img20.exs.cx/my.php?loc=img20&image=64-equals-65.gif

peleon

08-20-2004 15:01

Hello,

Quote:

Originally Posted by Rhodium

http://img20.exs.cx/my.php?loc=img20&image=64-equals-65.gif

Hmm....I just came from holidays and I saw that image "64=65?"....Did I miss something from the scene that I dont understand what that means? :D

Regards

omega_red

08-20-2004 17:39

I saw this ages ago. Explanation is, that "rectangle" that comes out after rearranging pieces is not really a rectangle (diagonal is not a line, but consists of 2 lines). It can be proven by calculating internal angles. So actually the "diagonal" has an empty space with field = 1.

If you like optical illusions, take a look at 212.33.90.248/~omega/rotsnake.gif

peleon

08-20-2004 19:26

Quote:

Originally Posted by omega_red

If you like optical illusions, take a look at 212.33.90.248/~omega/rotsnake.gif

Damn, I thought I was going crazy when looking into that image :) Good one!

Regards

drocon

08-21-2004 00:36

1 Attachment(s)

another way of explaining it -

(the board doesn't seem to allow [img] tags, so i made it an attachment, please refer to it.)

in reality, the slopes of segment AB and BD are not the same, one is 2/5, other is 3/8, so ABCD is really a extremely narrow parallelogram, with the area of 1. cheap trick, but fools the average eye :)

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