Rotations on the Coordinate Plane (8th)

Front

What is rotation in geometry?

Back

Rotation is a transformation that turns a figure around a fixed point, known as the center of rotation.

Front

What is the center of rotation?

Back

The center of rotation is the fixed point around which a figure rotates.

Front

What does a 90° clockwise rotation do to a point (x, y)?

Back

It transforms the point to (y, -x).

Front

What does a 180° rotation do to a point (x, y)?

Back

It transforms the point to (-x, -y).

Front

What does a 270° clockwise rotation do to a point (x, y)?

Back

It transforms the point to (-y, x).

Front

What is another term for rotation?

Back

Turn.

Front

How do you represent a rotation of 90° clockwise in coordinate notation?

Back

(x, y) → (y, -x).

Front

How do you represent a rotation of 180° in coordinate notation?

Back

(x, y) → (-x, -y).

Front

How do you represent a rotation of 270° clockwise in coordinate notation?

Back

(x, y) → (-y, x).

Front

What is the effect of rotating a shape 360°?

Back

The shape remains unchanged.