Explanation:
Two shapes are considered to be congruent if they can be mapped onto one another using rigid transformations (a sequence of one or more rotations, translations, and reflections). A congruent triangle is produced by any series of rigid transformations applied to a triangle.
Now, let's learn about Rigid transformation
A rigid transformation of the plane, also known as an isometry, keeps length intact. "Rigid transformations" include reflections, translations, rotations, and combinations of these three transformations.
Example: The preimage of right angle triangle and a right angle triangle are the example of congruent shapes.
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