geometry
posted by Amira .
BD is a perpendicular bisector of triangle ABC. XZ is a perpendicular bisector of triangle WXY.
Triangle ABC is similar to triangle WXY with a scale factor of 1:2.
Part I. Find BD, AB, WZ, XZ and WX.
Part II. What is the scale factor of the perimeters of triangle ABC and triangle WXY?
Show all work for credit.
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