The single rigid transformation that maps TriangleABC onto TriangleA'BC' is; Reflection
A rigid transformation is defined as a transformation of the plane that preserves length.
Now, the image of the transformation from TriangleABC onto TriangleA'BC' is as shown in the attached file.
From the attached image, the only method of rigid transformation that could be used to achieve the transformed figure is reflection as it is as good as a mirror image of the original figure.
Read more about transformations at; https://brainly.com/question/1462871
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