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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?

Choices:

A. Similar

B. Congruent

C. Increase in size

D. None of the above

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