Answer:
The coordinates of the rotated image are E(1,-2), F(2,-4), G(4,-1).
To rotate a triangle 180°, we need to multiply each of the x-coordinates by -1 and each of the y-coordinates by -1. This will invert the triangle around the origin (0,0). So, for triangle EFG, the new coordinates are E(-1*-1,2*-1), F(-2*-1,4*-1), G(-4*-1,1*-1) which simplifies to E(1,-2), F(2,-4), G(4,-1).