Rotation About the Origin

Give the coordinates for POINT H.

• (-1, 2)
• (1, -2)
• (-1, -2)
• (1 , 2)

What is the rule for rotating an image 90 degrees clockwise around the origin of the coordinate plane?

• (x, y) --> (-x, y)

• (x, y) --> (-x, -y)

• (x, y) --> (-y, x)

• (x, y) --> (y, -x)

What is the rule for rotating a figure 180 degrees around the origin in the coordinate place?

• (x, y) --> (-y, -x)

• (x, y) --> (-x, -y)

• (x, y) --> (-x, y)

• (x, y) --> (x, -y)

What is the rule for rotating an image counter clockwise 90 degrees around the origin in the coordinate plane?

• (x, y) --> (-y, x)

• (x, y) --> (y, -x)

• (x, y) --> (-y, -x)

• (x, y) --> (y, x)

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)

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)

If you were to rotate ABCD 180° about the origin, what would the coordinates of B' be?

• (0, 0)
• (-6, -5)
• (-1, 3)
• (-6, 2)

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

• (-4,-3)
• (-4,3)
• (4,-3)
• (3,4)

Triangle A is rotated 90° clockwise 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 C to D.

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