Transformations in Geometry – Translations and Reflections Practice Test

Prime notation shows the image of a point after a transformation. The transformed location of A is labeled A' to distinguish it from the original A. This helps us track where each point moves through translations, rotations, reflections, or dilations. It’s not a midpoint, not a point that’s simply no longer used, and it doesn’t indicate the line of reflection—that line is a separate concept. If you use coordinates, A might be (x, y) and A' would be the new coordinates (x', y') after the transformation.