Exercise 5 Page 204

The triangles have different orientations and locations. In $△ABC,$ the vertex $C$ is to the right of $A$ and $B.$ In $△EFG,$ the corresponding vertex $G,$ is to the left of $E$ and $F.$ To line up their orientations, we can rotate $△ABC$ $180^{\circ }$ about the origin.

Now, by translating $△A^{\prime }{B}^{\prime }{C}^{\prime }$ down by $1$ unit and left by $5$ units, we can map it onto $△EFG.$