Basic Rigid Motions

Describe the Transformation

• Reflection

• Translation

• Rotation

Describe the Transformation

• Rotation

• Reflection

• Translation

Describe the Transformation

• Translation

• Rotation

• Reflection

When you transform a figure, its angles change in size.

• True

• False

Triangle A is rotated 270° counterclockwise with the origin as the center of rotation to create a new figure. Which triangle shows the new location?

• A

• B

• C

• D

What rule describes the translation?

• (x - 6, y + 2)

• (x - 2, y + 6)

• (x + 2, y - 6)

• (x + 6, y - 2)

You want to reflect a figure over the horizontal line shown. 
What directions would you give? 
Reflect over the line: ________

• x = -4

• y = -4

• x - y = 4

• None of these

What is the rule for the following reflection? 

• Reflection across       y = 3

• Reflection across        x = −3

• Reflection across            x = 3

• Reflection across          y = −3

Rotate the point (-3,-4) around the origin 180 degrees. State the image of the point.

• (-4,-3)

• (-4,3)

• (4,-3)

• (3,4)

Triangle A is rotated 270° counterclockwise with the origin as the center of rotation to create a new figure. Which rule describes rotating 270° counterclockwise?

• (x,y)→(y, -x) 

• (x,y)→(x,y)

• (x,y)→(-y,x)

• (x,y)→(-x,-y)