1. Its symmetry group is a frieze group generated by a single glide reflection . 2. The symmetry operation between sequential vertices is glide reflection . 3. The isometry group generated by just a glide reflection is an infinite cyclic group. 4. A glide reflection line parallel to a true reflection line already implies this situation. 5. Glide reflections are given with dashed lines.6. The transverse articulation ( division ) of the Proarticulata body into "'gliding reflection . 7. A glide reflection can be seen as a limiting rotoreflection, where the rotation becomes a translation. 8. In 2-dimensions they repeat as glide reflections , as screw axis in 3-dimensions. 9. Isometries requiring an odd number of mirrors reflection and glide reflection always reverse left and right. 10. Some sea pens exhibit glide reflection symmetry, which is rare among non-extinct animals ( see ).
