Answer:
1.In 2-dimensional geometry, a glide reflection (or transflection) is a symmetry operation that consists of a reflection over a line and then translation along that line, combined into a single operation.
2.The intermediate step between reflection and translation can look different from the starting configuration, so objects with glide symmetry are in general, not symmetrical under reflection alone.
3.In group theory, the glide plane is classified as a type of opposite isometry of the Euclidean plane
