Missy’s rotation maps point K(17, –12) to K’(12, 17). Which describes the rotation?
270° counterclockwise rotation
90° counterclockwise rotation
90° clockwise rotation
180° rotation

Question

Missy’s rotation maps point K(17, –12) to K’(12, 17). Which describes the rotation?
270° counterclockwise rotation
90° counterclockwise rotation
90° clockwise rotation 
180° rotation

Vocaloid · Answer

you could approach this by either sketching the two points and seeing what kind of rotation would take you from K to K'

you could also compare the coordinates to these and see which transformation applies

|dw:1564533658438:dw|