Reflections Rotations Translations and Dilations of Points

What is the rule for rotating a figure 180 degrees

• (-y, x)

• (-x, -y)

• (y, -x)

• (-y, -x)

What is the rule for rotating a figure 270 degrees counterclockwise

• (-y, x)

• (-x, -y)

• (y, -x)

• (-y, -x)

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

How many degrees was the figure rotated?

• 90 degrees counterclockwise 

• 180 degrees

• 90 degrees clockwise

A dilation with a scale factor k>1 is called what?

• Reflection

• Rotation

• Translation

• Reflections, rotations, and translations do not change the angle measures of an image.  

Identify the type of dilation for the scale factor k=1/2.

• Reduction

• Enlargement

• Isometry

• None of these

Identify the type of dilation given the scale factor k=5/4

• Reduction

• Enlargement

• Isometry

• None of these

The mapping, or movement, of all points

of a figure in a plane according to a

common operation is called a......?

Which of the four transformations is not a type of isometry?