CPM Homework Help : CCG Problem 2-68

Plot $ΔABC$ on graph paper if $A(6,3)$ , $B(2,1)$ , and $C(5,7)$ .

$ΔABC$ is rotated about the origin $180º$ to become $ΔA'B'C'$ . Name the coordinates of $A'$ , $B'$ , and $C'$ .
This time $ΔABC$ is rotated $180°$ about point $C$ to form $ΔA''B''C''$ . Name the coordinates of $B''$ .
If $ΔABC$ is rotated $90º$ clockwise ( $\circlearrowright$ ) about the origin to form $ΔA'''B'''C'''$ , what are the coordinates of point $A'''$ ?

Use the eTool to graph and rotate triangle $ABC$ .
Click the link at right for the full version of the eTool: 2-68 HW eTool