Glide reflection- its a reflection of a figure in a lince and a translation along that line.
Orientaion- The arrangments of points.
Isometry- When the image of the LENGTH and the SIZE stays the same after the transformation to the original shape.
Direct Isometry- when the orientaion of the letters stay the same and it's length.
Opposite Isometry- The letter points of the shape, is backwards on the image but the length are the same. Just like a reflection.