Triangle ABC is rotated to form ​ △A'B'C' ​.


The coordinates of point A are (1, 4) , the coordinates of point B are (10, 5) , and the coordinates of point C are (6, 6) .


Which counter clockwise rotation around the origin results in the transformation of ​ △ABC ​​ to ​ △A'B'C' ​?

Triangle ABC is rotated to form A B C . The coordinates of point A are (1, 4) , the coordinates of point B are (10, 5) , and the coordinates of point C are (6, class=