Rotation and Dilation

Triangle ABC has been dilated to triangle A'B'C'. What is the scale factor?

• 2

• 3

• 4

A transformation that “turns” a figure about a fixed point at a given angle and a given direction.

• rotation

• translation

• reflection

• dilation

What is this picture an example of? 

• An angle

• A cat vertex 

• Rotation 

Describe the Transformation

• Translation

• Rotation

• Reflection

Which transformation does not preserve congruence?

• translation

• reflection

• rotation

• dilation

If you were to rotate ABCD 180°  about the origin, what would the coordinate of A' be?

• (-5, 5)

• (-3, -5)

• (-5, 3)

• (-3, 3)

What type of rotation does this represent (from red to blue)?

• 270⁰ clockwise

• 360⁰

• 90⁰ counterclockwise

• 180⁰

If (3,2)→(-3,-2) represents a counterclockwise rotation of the point on a coordinate plane, how many degrees is the rotation?

• 90

• 180

• 270

• 360

If you were to rotate ABCD 90° counterclockwise about the origin, what would the coordinate of A' be?

• (-5, 5)

• (-3, 5)

• (-5, 3)

• (-3, 3)

What is the rule for a 270 degree clockwise rotation?

• (x, y) --> (-y, x)

• (x, y) --> (y, -x)

• (x, y) --> (-x, -y)