Exercise 1 Page 216

Before we apply the similarity transformations, let's graph the original segment $\overline{C D} .$

Let's apply one transformation at time!

When a figure is rotated

9 0^{\circ}

counterclockwise about the origin, the coordinates of the figure's endpoints change such that

(x, y) \to (- y, x) .

Using this rule with the endpoints of

\overline{C D},

we can find the endpoints of

\overline{C^{'} D^{'}} .