coordinate geometry help? :(
i drew it out snd put the problem here: http://i.imgur.com/JXzrW.png

Question

coordinate geometry help? :(
i drew it out snd put the problem here: http://i.imgur.com/JXzrW.png

hoblos · Answer

in a rhombus:
1) all sides are equal :
       8x-5 = 3x+30
          5x=35
           x=7
so SR=8x-5 = 51

2) diagonals bisect each other :
     4z-8 = 3z
         z=8
RT=2(ET) = 2(5z+5) = 2(40+5) = 90

3) diagonals are perpendicular:
        9y+8 + 5y-2 = 90
            14y = 84
                y= 6
so <(TAS) = 9y+8 = 62

anonymous · Answer

ohh! thank you, i get it :)