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Topic: Two triangles and a circle (Read 1555 times) |
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pcbouhid
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How fast can you evaluate the ratio of the areas of the two triangles? (I´m already timing you).
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Don´t follow me, I´m lost too.
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JocK
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Re: Two triangles and a circle
« Reply #1 on: Nov 26th, 2005, 5:08am » |
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4 ...
... stop the clock! 
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| « Last Edit: Nov 26th, 2005, 5:09am by JocK » |
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solving abstract problems is like sex: it may occasionally have some practical use, but that is not why we do it.
xy - y = x5 - y4 - y3 = 20; x>0, y>0.
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SMQ
wu::riddles Moderator
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Re: Two triangles and a circle
« Reply #2 on: Nov 26th, 2005, 5:47am » |
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What he said.  Just rotate one of the tirangles by 60 degrees to make it obvious by inspection.
--SMQ
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--SMQ
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rmsgrey
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Re: Two triangles and a circle
« Reply #3 on: Nov 26th, 2005, 5:56am » |
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I guessed the answer before the thread loaded. First time I met this puzzle, it was two circles and a triangle - solved by adding an inverted triangle which makes things obvious.
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Grimbal
wu::riddles Moderator
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Re: Two triangles and a circle
« Reply #4 on: Nov 27th, 2005, 2:29pm » |
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WRONG!
Because the circle doesn't touch the outer triangle 
But close enough. 
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