If the shape and size remain unchanged the two images are congruent. Plane Mirrors and Reflection A mirror is a reflective surface that does not allow the passage of light and instead bounces it off thus producing an imageThe most common mirrors are flat and called plane mirrors. Transformations Task Cards With Qr Codes 8th Grade Math Math Math Instruction When a shape is reflected a mirror image is created. . How do you describe a reflection. There are five different transformations in math. This type of transformation is called isometric transformation. In the above diagram the mirror line is x 3. The figures are congruent before and after the transformation. 2 See answers Advertisement Advertisement imtired218912 imtired218912 When the line of reflection occurs. How do you describe lines of reflection. The word flip comes from the idea of making the. Mirror image expression reflexion reflectivity manife...