Rotations

Front

What is the rule for rotating a point 180° clockwise?

Back

(x, y) → (-x, -y)

Front

What is the result of rotating a triangle 90° counterclockwise about the origin?

Back

The new position of the triangle will depend on its original coordinates.

Front

What is the image of the point S (2, -5) after a rotation of 90° clockwise about the origin?

Back

S' (-5, -2)

Front

What transformation is represented by (x, y) → (x + 2, y - 3)?

Back

Slide right 2, down 3.

Front

What is the image of the point W (-5, -3) after a rotation of 270° counterclockwise?

Back

W' (-3, 5)

Front

What is the general rule for rotating a point 90° clockwise?

Back

(x, y) → (y, -x)

Front

What is the general rule for rotating a point 90° counterclockwise?

Back

(x, y) → (-y, x)

Front

What is the general rule for rotating a point 270° clockwise?

Back

(x, y) → (-y, x)

Front

What is the general rule for rotating a point 270° counterclockwise?

Back

(x, y) → (y, -x)

Front

How do you determine the new coordinates after a 180° rotation?

Back

Negate both coordinates: (x, y) → (-x, -y).