Reflection and the ABCD Theorem

Copies of figures are common in mathematics as well as in real life. Teachers photocopy test papers, artists use figures make sculptures, people look copies of themselves when they look at the mirror. In mathematics, congruent figures are exact copies of themselves. Two figures F and G are congruent if and only if G is […]
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The Reflection Postulate

Almost a week ago, we have discussed about some properties of reflection. We have learned that the pre-image of a figure is congruent to its image. We have also observed that the pre-image and image mirror each other. We also say that the preimage and image are symmetric. In this post, we learn formally the […]
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