Rotation vs Revolution

Triangle A is rotated 90° clockwise with the origin as the center of rotation to create a new figure. Which rule describes rotating 90° clockwise?

• (x,y)→(y, -x) 

• (x,y)→(-x,-y)

• (x,y)→(-y,x)

• (x,y)→(x,y)

Triangle A is rotated 270° counterclockwise with the origin as the center of rotation to create a new figure. Which rule describes rotating 270° counterclockwise?

• (x,y)→(y, -x) 

• (x,y)→(x,y)

• (x,y)→(-y,x)

• (x,y)→(-x,-y)

Triangle C is rotated 180° clockwise with the origin as the center of rotation to create a new figure. Which rule describes rotating 180° clockwise?

• (x,y)→(y, -x) 

• (x,y)→(-x,-y)

• (x,y)→(x,y)

• (x,y)→(-y,x)

Triangle B is rotated 90° counterclockwise with the origin as the center of rotation to create a new figure. Which triangle shows the new location?

• A

• B

• C

• D

If I rotate a picture by a full circle, how far has it gone?

How many degrees has this shape been rotated

If you turn from facing NORTH to facing WEST, how far have you turned?

• quarter

• half

• three quarters

• full circle

Which way has this F been rotated

• Up

• Across

• Clockwise

• Anit-clockwise

How many degrees does this shape rotate counterclockwise about the origin?

• 90°

• 180°

• 270°

• 360°

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

• (3, 5)

• (-3, -5)

• (-5, 3)

• (5, 3)