Definition of Image

The new position of a point, a line, a line segment, or a figure after a transformation is called its image.

Example of Image

  • In the example shown below, triangle A'B'C is the image of triangle A'B'C, after translation.
  • Points A'B'C are the images of points A, B, and C respectively.
  • The line segments A'B', B'C', and A'C' are the images of the original line segments AB, BC, and AC respectively.

Video Examples: Geometry: iCoachMath Works

     example of  Image

Solved Example on Image

Ques: What would be the image of a polygon reflected over a line with respect to the original polygon?

    A. Similar
    B. Congruent
    C. Increase in size
    D. None of the above
    Correct Answer: B


    Step 1: A reflection flips the figure across a line. The new figure is a mirror image of the original figure.
    Step 2: So, the image of the polygon reflected over a line is congruent with respect to the original polygon.