Arrow Rule of Transformation.
a. The arrow rule for 90 degrees clockwise rotation is
[tex](x,y)\rightarrow(-y,x)[/tex]b. The vertices of the images after transformation are;
[tex]\begin{gathered} A(0,0)\rightarrow A^I(0,0) \\ B(0,4)\rightarrow B^I(-4,0) \\ C(5,4)\rightarrow C^I(-4,5) \\ D(5,0)\rightarrow D^I(0,5) \end{gathered}[/tex]