Review Unit 2A Rigid Motion

The original figure prior to a transformation.

• Pre-image
• Image

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

If the dotted figure is the image, the original figure was reflected over the ...

• x-axis
• y-axis

True or false: A reflection makes a congruent figure. 

• true
• false

When an ordered pair is reflected across the x-axis, what changes?

• nothing
• y-value
• x-value

The ordered pair (-3, 4) is reflected across the x-axis. What is the new ordered pair?

• (-3, -4)
• (3, 4)
• (3, -4)
• (-3, 4)

A slide is also called a _________.

• Translation
• Reflection
• Rotation
• Transformation

True or False: Rigid motions preserve angle measure.

• True

• False

Identify the transformation from C to D.

• 90^o Clockwise Rotation
• 180^o Rotation
• 270^o Clockwise Rotation
• 360^o Rotation

Identify the correct picture which represents a 90^o clockwise rotation about the origin.

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