Question

which transformations map the strip pattern onto itself? b b b b b i p p p p p a horizontal translation only a reflection across a vertical line a horizontal translation and a glide reflection a horizontal translation and a 180° rotation

Explanation:

A horizontal translation will move the pattern along the horizontal axis and map it onto itself as the pattern is repetitive horizontally. A glide - reflection combines a translation and a reflection. For this pattern, a horizontal translation followed by a reflection (glide reflection) can also map the pattern onto itself. A reflection across a vertical line will not work as the pattern is not symmetric vertically. A 180 - degree rotation will not map the pattern onto itself as the orientation of the letters will change.

Answer:

C. A horizontal translation and a glide reflection