Problem 106 of 7
Explain why rotation 60 degrees counter-clockwise about vertex A maps triangle ABC to triangle A'B'C' establishes triangle congruence.
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reason that rotation preserves side lengths and angles.
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Rotation must be specified with center and angle or clear enough context.
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Your answer is equivalent to the expected form.
Walkthrough
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1. Identify the rotation as a rigid motion.
2. State that rotations preserve distances and angle measures.
3. Conclude the mapped triangles are congruent.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Explanations based only on the triangles looking aligned after rotation.