Symmetry group cm/I horizontally reflects a pair of glide-reflected tiles as shown below.
Pattern 1-4M-3-3/cm/I horizontally reflects a pair of glide-reflected Blocks 1-4M-3-3 as shown below.
Pattern 1-4M-3-3/cm/I is an 8-shape tessellation.
Symmetry group cm/I horizontally reflects a pair of glide-reflected tiles as shown below.
Pattern 1-4M-3-3/cm/I horizontally reflects a pair of glide-reflected Blocks 1-4M-3-3 as shown below.
Pattern 1-4M-3-3/cm/I is an 8-shape tessellation.