Triangle EFG is rotated 90° clockwise about the origin to create triangle E'F'G'.
The new coordinates of the vertices after rotation are as follows:
Point E = (x, y) becomes E' = (y, -x)
Point F = (x, y) becomes F' = (y, -x)
Point G = (x, y) becomes G' = (y, -x)
Therefore, if the original coordinates of E, F, and G are given, we can easily find the coordinates of E', F', and G' by applying the rotation formula.