Transformations STAAR Review

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)

Triangle ABC is going to be translated. Where would  A' position be at, if the translation was be (x,y) --> (x+3, y-2)?

• (-1,3)

• (5,3)

• (5,8)

• (3,5)

Which of the following transformations does NOT preserve congruence?

• dilation

• translation

• rotation

• reflection

If a transformation preserves congruence, then the angles of the pre-image and image are congruent.

• True

• False

• A

• B

• C

• D

Q21

• A

• B

• C

• D

A certain transformation on the coordinate plane can be represented with the following algebraic representation which shows the effect it will have on each ordered pair:

Which describes the transformation?

• A rotation 90° clockwise

• A translation left

• A reflection over the y-axis

• A reflection over the x-axis

What type of transformation is this?

• rotation

• translation

• reflection

• dilation

Pentagon WXYZ is shown on the coordinate grid. A student reflected pentagon WXYZ across the x-axis to create pentagon W'X'Y'Z'. Which rule describes this transformation?

• (x, y) → (x, -y)

• (x, y) → (x, y + 8)

• (x, y) → (-y, x)

• (x, y) → (-x, y)

Rectangles ABCD and A´B´C´D´ are shown on the coordinate plane. Which algebraic representation shows how the coordinates of rectangle A´B´C´D´ were found?

• (1/2x, 1/2y) -> (x,y)

• (x,y) -> (1/2x, 1/2y)

• (2x, 2y) -> (x,y)

• (x,y) -> (2x, 2y)