What must be true of the two triangles when ?xyz is reflected over a vertical line and then dilated by a scale factor of ? resulting in ?x'y'z'?
1) The corresponding angles of the two triangles are congruent
2) The corresponding sides of the two triangles are congruent
3) The two triangles are similar
4) The two triangles are congruent
5) The two triangles have the same area

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