Geometry Rigid Transformations

Point (-5,2) is reflected over the y axis.  Where is the new point located?

• (5,2)

• (-5,-2)

• (-5,2)

• (5,-2)

Given C(2, 9), under which reflection is C'(2,- 9)?

• reflected in the x-axis

• reflected in the y-axis

• reflected in the line x = 2

• reflected in the line y = x

The point that is to be transformed is called the:

• Pre-Image

• Image

• Post-Image

• Transformation

Which answer shows a reflection across the y-axis?

• a

• b

• c

• d

Determine how to translate triangle A'B'C' to triangle ABC.

Which of the following describes the sequence of transformations shown?

• Reflect across the x-axis and then rotate 90º clockwise around the origin

• Rotate 90º degrees around the origin and then translate right.

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

• Translate up and then rotate 90º counter clockwise about the origin.

The coordinates of triangle JRB are J(1, -2) , R(-3, 6) and B(4, 5). The triangle is reflected over the y-axis and then translated 2 right and 1 down. What are the the co-ordinates of triangle J'R'B'?

• (3, 1), (-1, -7), (6, -6)

• (3, -3), (-1, 5), (6, 4)

• (1, -3), (5, 5), (-2, 4)

• (-1, -2), (3, 6), (-4, 5)

What series of transformations occurred to the pentagon?

• It translated to the right 2 and down 3, then it reflected over the y-axis.

• It reflected over the x-axis, then translated left 2 and up 3.

• It rotated 90° counter-clockwise about the origin, then reflected over the y-axis.

• It reflected over the y-axis, then translated right 4 and up 3.

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

Identify the transformation from A to D.

• 90^o Clockwise Rotation

• 180^o Rotation

• 90^o Counter Clockwise Rotation

• 270^o Clockwise Rotation

• 270^o Counter Clockwise Rotation