Triangle ABC is rotated to form △A'B'C' .The coordinates of point A are (1, 1) , the coordinates of point B are (3, 1) , and the coordinates of point C are (1, 4) .Which counter clockwise rotation around the origin results in the transformation of △ABC to △A'B'C' ?

Step-by-step explanation:

As we know the coordinate of point A = (1,1) , B = (3,1) and C = (1,4).

Rotate triangle ABC around the origin;

The rule for this transformation is:  (x,y) => (-y ,x)

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.