Midterm Review

A transformation that “turns” a figure about the origin and a given direction, 90 degrees clockwise

• (-x, -y)
• (y, -x)
•  (-y, x)
• (x, -y)

Identify the transformation from A to D.

• 90^o Clockwise Rotation
• 180^o Rotation
• 270^o  clockwise Rotation
• 360^o Rotation

Identify the transformation from C to C.

• 90^o Clockwise Rotation
• 180^o Rotation
• 270^o Clockwise Rotation
• 360^o Rotation

Identify the transformation from ABCD to A'B'C'D'.

• 90^o rotation
• Translation
• Reflection across the x-axis
• Reflection across the y-axis

Identify the transformation from ABC to A'B'C'.

• Reflection across the x-axis
• Reflection across the y-axis
• 90^o clockwise rotation
• 90^o counterclockwise rotation

Write a rule for the translation.

•  (x -1, y  + 2)
•  (x -2, y  + 1)
•  (x +2, y  - 1)
• (x +1, y  -  2)

Identify the transformation.

• Reflection across y axis
• Reflection across x-axis
• 180 Rotation
• Translation 2 units down

Reflect the figure across the y-axis. What are the coordinates of A'?

• (-2, -4)
• (2, 4)
• (-2, 4)
• (2, -4)

A dilation is which of the following: 

• An enlargement
• A reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (5,3)
• (20,12)
• (-20,-12)
• (-5,-3)