To determine the coordinates of vertex A' after reflection, we need to know the coordinates of vertex A and the line of reflection.
Let's say vertex A has coordinates (x_A, y_A) and the line of reflection is a vertical line defined by a specific x-coordinate.
When reflecting over a vertical line, the x-coordinate of the point on the opposite side of the line is determined by the distance from the point to the line.
If the line of reflection is x = k, then the reflected point A' will have coordinates:
- \( A' = (2k - x_A, y_A) \)
If you provide me with the coordinates of A and the equation of the line of reflection, I can help you find the exact coordinates of A'.