1. Tessellation by Glide Reflection Technique. a) The left side of the dashed square with sides of length 9 units has been modified. Apply a glide reflection to the modified side about the line & and by a horizontal translation (9,0). This creates a pattern that tessellates the plane. Highlight its four "sides" and color the interior of the pattern. b) Use the pattern created above to tessellate the following grid. Alternate colors