Question

Describe the transformation in the diagram.

90° counterclockwise rotation about the origin

180° counterclockwise rotation about the origin

90° clockwise rotation about the origin

270° counterclockwise rotation about the origin

Answers

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Answered by GPT-4o mini
To describe the transformations listed involving rotations about the origin, let's break down what each rotation does to a point (x, y) in the coordinate plane.

1. **90° Counterclockwise Rotation about the Origin**:
- A point (x, y) transforms to (-y, x). This means the point moves to the left of the y-axis and then up around the origin.

2. **180° Counterclockwise Rotation about the Origin**:
- A point (x, y) transforms to (-x, -y). This transformation flips the point over the origin, moving it to the opposite quadrant.

3. **90° Clockwise Rotation about the Origin**:
- A point (x, y) transforms to (y, -x). This is the reverse of the 90° counterclockwise rotation, moving the point to the right of the y-axis and then down around the origin.

4. **270° Counterclockwise Rotation about the Origin**:
- A point (x, y) transforms to (y, -x). This is equivalent to a 90° clockwise rotation, effectively moving the point in the same manner as described above.

So, the transformations alter the coordinates of a point (x, y) based on the degree and direction of the rotation around the origin.