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        riddles >> easy >> Two triangles and a circle
        
(Message started by: pcbouhid on Nov 26^th, 2005, 5:03am)

Title: Two triangles and a circle
Post by pcbouhid on Nov 26^th, 2005, 5:03am

How fast can you evaluate the ratio of the areas of the two triangles? (I´m already timing you).

Title: Re: Two triangles and a circle
Post by JocK on Nov 26^th, 2005, 5:08am

[hide]4[/hide] ...

... stop the clock! ;D

Title: Re: Two triangles and a circle
Post by SMQ on Nov 26^th, 2005, 5:47am

What he said. :) Just [hide]rotate one of the tirangles by 60 degrees[/hide] to make it obvious by inspection.

--SMQ

Title: Re: Two triangles and a circle
Post by rmsgrey on Nov 26^th, 2005, 5:56am

I guessed the answer before the thread loaded. First time I met this puzzle, it was two circles and a triangle - solved by [hide]adding an inverted triangle[/hide] which makes things obvious.

Title: Re: Two triangles and a circle
Post by Grimbal on Nov 27^th, 2005, 2:29pm

WRONG!

Because the circle doesn't touch the outer triangle :P

But close enough. ;)