find value of x, show your work

♦Here is your answer♦
35}{2}cm= 17.5cmx=
2
35
cm=17.5cm
REASON :
AB//CD
So,
/_A=/_D ... (alternate int. angles)
/_B=/_C ... (alt. int. angles)
So,
Tri.ABE~Tri.DCE... (by AA similarity)
Therefore,
Corresponding sides are proportional
i.e.
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