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Three of the points in the sketch below represent: the pre-image, the image and the point through which the original is reflected. Mark them and write down the rules of reflection.
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E is the point through which the reflection is performed, and the points A and C are either the pre-image and the image or vice versa. In our case, we choose the point A for the pre-image, and the point C as its image.
The rule is written as:
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