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Across 2. when line of reflection is perpendicular bisector of segment BB' 9. original figure in a transformation 11. a transformation does this to a figure onto its image 13. a repeating pattern of figures that completely covers a plane without overlap or gaps 15. a mirror image or result of a reflection 16. when the image is enlarged or reduced 18. composition of translation followed by reflection 19. used to identify image points 20. a tessellation

Down 1. more than one transformation at a time 3. an isometry that maps a figure onto itself 4. the result of a transformation 5. dilation by a factor less than 1 6. moves all points of a figure the same distance and direction 7. Repeats itself along a straight line 8. change in position, size or shape of a figure 10. when an image is congruent to its preimage 12. when a half turn maps a figure onto itself 14. describes size change from preimage to image 17. transformation that uses circular motion