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Vocabulary
Translations
Reflections
Rotations
Dilations
100

Operations that alter the form of a figure. Examples: translations, reflections, dilations, and rotations.

What is transformations?

100

What is the algebraic rule that moves every point 8 units right and 3 units down?

What is (x + 8, y – 3)?

100

Reflecting a figure flips it over this.

What is the line of reflection?

100
This angle of rotation creates the same image if it's rotated clockwise or counterclockwise.
What is a rotation of 180 degrees?
100
Enlargement or Reduction: Dilation by a scale factor of 4/3.
What is enlargement?
200

Name the three transformations that preserve congruence.

What are translations, reflections, and rotations?

200

Which property of a figure stays the same after a translation: orientation, congruence, or both?

What is both?

200

What is the algebraic rule when reflecting over the y-axis?

(x, y) → (-x, y)

200
The rotation that creates the same image as a rotation 270 degrees clockwise.
What is a rotation 90 degrees counterclockwise?
200

This number tells how much a figure grows or shrinks in a dilation.

What is the scale factor?

300

This transformation creates similar figures but NOT congruent figures.

What is a dilation?

300

Point P(7, –4) becomes P′(–1, 6). What translation took place?

What is (x, y) → (x-8, y+10)

300

A point goes from (5, –7) to (5, 7). What reflection occurred?

What is reflection over the x-axis?

300

What is the algebraic rule for a rotation clockwise of 90 degrees.

What is (x, y)-->(y, -x)

300

Determine the scale factor: B(2, 5) and B'(1, 2.5).

What is scale factor = 1/2?

400
A transformation in which a plane figure turns around a fixed center point.
What is rotation?
400

Find the coordinates of M' and N' when MN with M(-4, -1) and N(-3, -3) is translated 5 units right and 2 units up.

What is M'(1, 1) and N'(2, -1)?

400

A point goes from (x, y) to (–x, y). Which axis did it reflect over?

What is the y-axis?

400
This angle of rotation maps (x, y)-->(-y, x).
What is rotation 270 degrees clockwise or 90 degrees counterclockwise?
400
Find the coordinates of Y' when X(12, 4), Y(8,2) and Z(-4,0) are dilated by a scale factor of 1/4.
What is Y'(2, 1/2)?
500

Figures that have the same angle measures but different side lengths are called this.

What are similar figures?

500

The coordinate mapping when D(-5, 4), E(-4, 1), and F(-2, 1) are translated to D'(-5,0), E'(-4, -3), and F'(-2, -3).

What is (x, y)-->(x, y-4)?

500

If a point ends at (–7, –12) after reflecting over the x-axis, where did it start?

What is (–7, 12)?

500
Find the coordinates of A' and B' when A(-3, -2) and B(-1, 2) are rotated clockwise 180 degrees.
What is A'(3, 2) and B'(1, -2)?
500

Quinn increases both the length and width of a pool by a scale factor of 2. By what factor will the perimeter change?

What is by a factor of 2?