perplexus.info :: Shapes : Four Tangent Circles

Four Tangent Circles (Posted on 2003-10-20)

Four circles are tangent to each other and to a triangle that surrounds them, as shown in the figure. Each of the three circles in the corners have a radius of 1 cm. What is the radius of the circle in the middle?

No Solution Yet Submitted by Bryan

Rating: 4.2500 (8 votes)

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re: not that dificult...

| Comment 10 of 13 |

(In reply to not that dificult... by karin)

nevermind i'm an idiot- the height to width ratios of the trapezoids, when cutting the large one in half are not equal. I got it now.

Posted by karin on 2004-03-18 13:32:15

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