How do you rotate a figure 90 degrees counterclockwise about the

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When triangle ABC starts in quadrant I and is rotated 270 degrees counterclockwise, what quadrant will contain the image? - Quora

What is the image of (1, -6) for a 90° counterclockwise rotation about the origin?

Rotating shapes about the origin by multiples of 90° (article)

Rotate Image by 90 degree - GeeksforGeeks

In the figure below, Triangle A has been rotated about the origin. Which Triangle shows a 90 degree

90 Degree Counter Clock Wise Rotation About Any Arbitrary Point

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Rotating shapes about the origin by multiples of 90° (article)

Geometry Rotations Clockwise and Counterclockwise Explained! — Mashup Math