[br]1) Record the coordinates for triangle ABC. [br][br]2) Rotate triangle ABC 90 degrees counter-clockwise (drag the red slider). Record the new coordinates. [br][br]3) Rotate the triangle ABC 180 degrees counter-clockwise. Record the new coordinates.
1) A(1,2) B(4,5) C(2,6)[br]2)A(-2,1) B(-5,4) C(-6,2)[br]3)A(-1,-2) B(-4,-5) C(-2,-6)