The coordinate = (1, 5)
Step-by-step explanation:
The 3 vertices given:
(4, 2), (1,2), (4, 5)
Since the shape is a square, it means the length of all sides will be the same
Distance between (4, 2) and (4, 5) is the same
From (4, 2) to (4, 5), there are 3 lines in between them
Distance between (1, 2) and the 4th vertices will also be the same
from (1, 2) to the 4th vertice, there will also be 3 lines in between
Now counting the three lines upward on the graph from the same line as x =1,
on the y axis from 2, we would get y = 5
So the x coorcinate will remain the same but the y cordinate moves 3 units upward.
The missing vertex is x = 1, y = 5
The coordinate = (1, 5)
If we put the point on the graph, we would see the diatance are the same for the 4 sides of the square