How can I solve these equations using mathematica?

*To*: mathgroup at smc.vnet.net*Subject*: [mg72415] How can I solve these equations using mathematica?*From*: "aspyu" <endeavour009 at gmail.com>*Date*: Wed, 27 Dec 2006 05:19:03 -0500 (EST)

HI,members I have a equation group as fellowed: (x1-x10)^2 + (y1-y10)^2= = a .........................................1 (x2-x20)^2 + (y2-y20)^2 = = b ..........................................2 (x3-x30)^2+ (y3-y30)^2 = = c ................................................3 (x1-x2)^2+(y1-y2)^2 = = d1 ...................................................4 (x1-x3)^2+(y1-y3)^2 = = d2 ......................................................5 (x3-x2)^2+(y3-y2)^2 = = d3 ...........................................................6 where x1,y1,x2,y2,x3,y3 are an unknown quantities, and othes are the constant. I have tried the function "Reduce "and "Solve",but the mathematica can not give me any result. Can anyone give me some other advices or method to solve this problem. Thanks