Definition of Image

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

Examples 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.

Solved Example on Image

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.

Related Terms for Image

  • Transformation
  • Congruent
  • Similar
  • Point
  • Line
  • Figure
  • Line Segment