Coordinate Plane Transformations

Which of the following transformations produces a figure that is congruent to the original figure?

• Rotations

• Reflections

• Translations

• Dilations

Reflections over the x-axis change the sign of the ____-__________. 

• y-coordinate

• x-coordinate

• y-axis

• x-axis 

Determine how to translate triangle A'B'C' to triangle ABC.

• right two, down five

• right two, down 9

• left two, down 9

• left two, down 5

Reflecting over the y-axis changes the sign of the ____-_____________. 

• x-axis

• x-coordinate

• y-coordinate

• none of the above

The point that is to be transformed is called the:

• Pre-Image

• Image

• Post-Image

• Triangle

After being transformed the new point is called a(n):

• Pre-Image

• Post Image

• Alternate Image

• Image

Identify the transformation from ABC to A'B'C'.

• Translation

• 90^o clockwise rotation

• 90^o counterclockwise rotation

• Reflection across the x-axis

Identify the transformation from A to D.

• 90^o Clockwise Rotation

• 180^o Rotation

• 270^o Clockwise Rotation

• 360^o Rotation

Which rule would dilate shows a scale factor of 4

• (x, y) → (y, x)

• (x, y) → (x + 4, y + 4)

• (x, y) → (x, -y)

• (x, y) → (4x, 4y)