Rotation & Dilation at Fixed Point

Which of the following is the rule for 90-degree counterclockwise rotations about the origin?

Which of the following is the rule for 180 degree rotations about the origin?

Which of the following is the rule for 270-degree counterclockwise rotations about the origin?

• <9,7>

• <9,-7>

• <-7,8>

• <-9,7>

• <7,9>

• <-7,9>

• <11,10>

• <7,-9>

What is the coordinate location of D' after rotation 90 degrees clockwise?

• (7,9)

• (11,10)

• (10,11)

• (9,7)

If P is the center of dilation, DEFG is the pre-image, and D'E'F'G' is the image; what is the scale factor?

• 3

• 2

• 1/2

• 1/3

If P is the center of dilation, D'E'F'G' is the pre-image, and DEFG is the image; what is the scale factor?

• 3

• 2

• 1/2

• 1/3

If P is the center of dilation, D''E''F''G'' is the pre-image, and D'E'F'G' is the image; what is the scale factor?

• 3

• 2

• 1/2

• 1/3

If P is the center of dilation, D'E'F'G' is the pre-image, and D''E''F''G'' is the image; what is the scale factor?

• 3

• 2

• 1/2

• 1/3