Question

Which one of the flags was rotated 270 degrees about the origin ( Point A) . The rest of instructions is in the pic below.

Answer 1

SOLUTION

The 270 degree counterclockwise degree rotation about a point is given by the rule

$A(x,y)\Rightarrow A^1(y,-x)$

From the image above,

The point will be converted by using the rule above

$\begin{gathered} D=(7,4)\Rightarrow D^1(4,-7) \\ E=(6,1)\Rightarrow E^1(1,-6) \\ C=(5,6)\Rightarrow C^1(6,-5) \\ B=(3,3)\Rightarrow B^1(3,-3) \end{gathered}$

Hence, the image wil be in the fourth quardract are given below.