Rotation Around the Origin

Triangle ABC is rotated 180 degrees counterclockwise around vertex C. Find the coordinates of B'.

• B' (-4, -4)

• B' (2, -2)

• B' (6, 0)

• B' (5, -1)

Identify the correct picture which represents a 90^o clockwise rotation about the origin.

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• (− 4, − 1)

• (4, 1)

• (1, -4)

• (1, 4)

• Dilation, then reflection

• Rotation, then translation

• Reflection, then translation

• Translation, then reflection

Triangle DEF has vertices D(2,0), E(1,-2), and F(2,1). The triangle is rotated 90˚clockwise about the origin.What are the coordinates of vertex F' ?

• (-2, -1)

• (-1, -2)

• (1, -2)

• (-2, 1)

If you were to rotate ABCD 90° counterclockwise about the origin, what would the coordinate of A' be?

• (-5, 5)

• (-3, 5)

• (-5, 3)

• (-3, 3)

Rotate the point (-3,-4) around the origin 180 degrees. State the image of the point.

• (-4,-3)

• (-4,3)

• (4,-3)

• (3,4)

How many degrees was the figure rotated?

• 90 degrees counterclockwise 

• 180 degrees

• 90 degrees clockwise

How many degrees was the figure rotated?

• 90 degrees counterclockwise 

• 180 degrees

• 90 degrees clockwise

What is this picture an example of? 

• An angle

• A cat vertex 

• Rotation 

• Dilation