coordinates of C
int cx = 2 , cy = 5 ; Console . WriteLine ( ax + bx - cx + " , ▁ " + ( ay + by - cy ) ) ; Console . WriteLine ( ax + cx - bx + " , ▁ " + ( ay + cy - by ) ) ; Console . WriteLine ( cx + bx - ax + " , ▁ " + ( cy + by - ax ) ) ; } }