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%Insert figure 2 \end 2) This in the reflection in respect to the y axis. Figure 2 3) This is the identity transformation, each point being left as is was: Figure 3 4) Each point of the plane, i.e. the points inside or on the edges and vertices of the unit square transform into points with the same abscissa and with opposite sign ordinate: Figure 4 5. ' The same as Figure 3, but only if the identity of the vertices is lost. Being a reflection in respect to the line y = x, and starting from a square with two vertices on it, we obtained in fact a rotated square.. 6. ' The effect on the square is the same as the one described by transformation 4, see Fig. 4. 7. ' The same as Figure 1. 8. ' The same as Figure 2.