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Determine the value of $a$. [asy] pair w=(0,4); pair x=(0,0); pair y=(4,0); pair z=y+7/sqrt(2)*(1,1); dot(w); dot(x); dot(y); dot(z); draw(w--x--y--z--w); draw(0.15*w--0.15*w+0.15*y--0.15*y); label("$W$",w,NNW); label("$X$",x,SW); label("$Y$",y,SE); label("$Z$",z,E); label("4",(w+x)/2,W); label("4",(x+y)/2,S); label("9",(w+z)/2,NNW); label("$a$",(y+z)/2,SE); label("$135^\circ$",y,NNW); [/asy]

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 Mar 27, 2020
edited by Guest  Mar 27, 2020
 #1
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Um... latex, please? This is kinda unreadable.... I'd love to help, though!

 Mar 27, 2020

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