WDWL 1/20 Transformations

Describe the transformation in the image.

• Translation

• Reflection

• Rotation

The original figure prior to a transformation.

• Pre-image

• Image

The mathematical term for the line that you reflect a shape over is the...

• Mirror

• Reflective tape

• Line that you reflect over

• Line of reflection

After a figure has been transformed, we call the new figure the...

• Image

• Different shape

• Figure that moved

• Prime

Describe the transformation:

(x, y) -> (x+3, y)

• Translation 3 units to the left

• Translation 3 units up

• Translation 3 units to the right

• Translation 3 units down

Describe the transformation:

(x, y) -> (x, -y)

• reflection across the x-axis

• reflection across the y-axis

• rotation 90 degrees clockwise

• rotation 90 degrees counterclockwise

Describe the transformation:

(x, y) -> (-y, x)

• reflection across the x-axis

• reflection across the y-axis

• rotation 90 degrees clockwise

• rotation 90 degrees counterclockwise

Describe the transformation:

(x, y) -> (y, -x)

• reflection across the x-axis

• reflection across the y-axis

• rotation 90 degrees clockwise

• rotation 90 degrees counterclockwise

The point (-5,2) is reflected over the y axis.  Where is the new point located?

• (5,2)
• (-5,-2)
• (-5,2)
• (5,-2)

Identify the transformation from  triangle C to triangle D.

• 90^o Counter clockwise Rotation
• 180^o Rotation
• 270^o Counter clockwise Rotation
• 360^o Rotation