有沒有好辦法？

A quatrilateral that has consecutive sides of lengths 70, 90, 130, 110 is inscribed in a circle and also has a circle inscribed in it. The point of tangency of the inscribed circle to the side of length 130 divides that side into segments of lengths x and y. Find |x-y|.

ASHME 1990 problem 28.

Thanks in advance!

所有跟帖： 

• 回複：有沒有好辦法？ -idiot94- ♂ (409 bytes) () 03/07/2009 postreply 10:49:37

• 回複：回複：有沒有好辦法？ -cma- ♂ (14 bytes) () 03/09/2009 postreply 08:40:19