Transformations Dilations

A _______ is a transformation that enlarges or reduces a figure by a scale factor relative to a center point.

• Rotation

• Translation

• Dilation

• Reflection

Which of the following describes the sequence of transformations shown?

• Reflect across the x-axis and then rotate -90 degrees cw around the origin

• Rotate 90 degrees cw around the origin and then translate down.

• Reflect across the x-axis and then reflect across the y-axis.

• Translate up and then rotate 90 degrees ccw about the origin.

Which of the following shows a dilation?

• 
• 
• 
• 

An office supply store sells index cards in two different sizes. The large size is an enlargement of the small size. Both sizes are shown. Find the scale factor of the enlargement.

• 2

• 3

• 4

• 5

Choose the correct transformations

• rotate 90 degrees counter-clockwise around the origin, and then reflect over the x-axis

• right 1, down 4, and then reflection over the y-axis

• right 6, and then reflection over the x-axis

• reflection over the line y=x, and then translate up 4, right 2

Which answer shows a reflection across the y-axis?

• a

• b

• c

• d

If we reflect triangle ABC over the line shown (y=-x), where would A' be located? 

• (2,-5)

• (1,2)

• (-1,-3)

• (-1,-2)

If a Scale Factor is between 0 and 1, then your figure gets...

• Smaller

•  Bigger

• Turned upside-down

• Does not change

If a Scale Factor if greater than 1, then your figure gets...

• Smaller

• Bigger

• Turned upside-down

• Does not change

Translations, reflections and rotations are all known as ________________________.

• Geometry

• Transformations

• Congruent

• Orientation