Which of the following transformations were applied to any polygon plane, producing congruent polygons? Select all that apply:
- Coordinate reflection across the origin line
- Rotation about the origin
- Translation units down and units counterclockwise
- Translation units up and units to the right followed by a rotation of 270 degrees
- Dilation centered at (1, 1) with a scale factor of 4
- Reflection across the V-axis