Answer:
The vertex is (-9 , 2)
Explanation:
∵ A = (2 , 9) , B = (6 , 2) , C = (-2 , 2)
* After rotating 90° clockwise about the origin (change sign x-coordinate
and replace them by each other)
∴ A = (9 , -2) , B = (2 , -6) , C = (2 , 2)
* After reflected across the y-axis (change sign x-coordinate)
∴ A = (-9 , -2) , B = (-2 , -6) , C = (-2 , 2)
* After reflected across the x-axis (change sign y-coordinate)
∴ A = (-9 , 2) , B = (-2 , 6) , C = (-2 , -2)