ANSWER and EXPLANATION
When a point is rotated 180 degrees counterclockwise (with the origin as the center of rotation), the coordinates of the point changes as follows:
[tex](x,y)\to(-x,-y)[/tex]
Hence, the coordinates for the triangle S'T'U' will be:
[tex]\begin{gathered} S(-1,3)\to S^{\prime}(1,-3) \\ T(-4,3)\to T^{\prime}(4,-3) \\ U(-3,1)\to U^{\prime}(3,-1) \end{gathered}[/tex]
Let us plot that:
That is the answer.
