1. Describe the transformation K L M M' L' J' K' JKLM has been rotated 90o about the origin (0,0) in a counterclockwise direction. We could also say that JKLM has been rotated 270o in a clockwise direction. J

2. Rotation of 90o counter-clockwise about (0,0) J K L M M' L' J' K' Describing a rotation or a turn An angle of rotation 1 2 3 A direction (clockwise or counterclockwise). A center of rotation

3. RRRR Which figures have been rotated? R

4. J K L M Rotate JKLM 180 degrees about (0,0), label the image J'K'L'M' M'L'J'K' J(2,2) K(5,2) L(5,4) M(2,5) J'(__,__) K'(__,__) L'(__,__) M'(__,__) You can rotate JKLM to check your answer. M' L' K' J'

5. J K L M Rotate JKLM 270 degrees counterclockwise about (0,0), label the image J''K''L''M'' M''L''J''K'' J(2,2) K(5,2) L(5,4) M(2,5) J''(__,__) K''(__,__) L''(__,__) M''(__,__) You can rotate JKLM to check your answer. M'' L''K'' J''

6. ABCD has been rotated how many degrees about (0,0)? A B C D C'D'A'B' 90 degrees counter- clockwise or 270 degrees clockwise

7. 270 degrees 180 degrees 90 degrees (A,B)(-B,A) (2,5) (-5,2) (A,B) (-A,-B) (5,2) (-5,-2) (A,B)(B,-A) (5,4) (4,-5) Rotation counterclockwise about (0,0)