A dot is placed at the top of a circle. The circle is rotated 180°. Where will the dot appear?

Answer: A. Bottom

Half-Turn Rotation: A full rotation around a circle is 360°, so a 180° rotation represents an exact half-turn. Opposite Position: Rotating a shape halfway around its center moves every point directly opposite its starting position.
Because 180° is an exact half-circle, the dot will end up at the bottom whether you rotate the circle clockwise or counterclockwise.

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