AB is similar to XW 2 * 3/2 = 6/2 = 3 XW = 3
BC is similar to WZ 3* 3/2 = 9/2 = 4.5 WZ = 4.5
BC is similar to YZ 2*3/2 = 6/2 = 3 YZ = 3
AD is similar to XY 3 *3/2 = 9/2 = 4.5 XY = 4.5
done
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