Respuesta :
Answer:
rotational symmetry
Step-by-step explanation:
That's the definition of rotational symmetry: the object maps to itself after rotation of less than one full turn.
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The number of different rotational angles at which the object maps to itself defines the order of the rotational symmetry.
Answer:
rotational symmetry
Step-by-step explanation:
If an object maps onto itself after being rotated 180 degrees or less about a line, it has rotational symmetry.