Items 3-5. A city planner is mapping out some new features for a triangular park. She sketches the park on grid paper. The coordinates of the vertices of the park are (1, 1), (1,4), and (-3,4).

3. The city planner wants to put recycling bins at the circumcenter of the park. What are the coordinates of the recycling bins?

4. The city planner wants to plant a tree at the orthocenter of the park. What are the coordinates of the tree?

5. The city planner wants to put a flower bed at the centroid of the park. What are the coordinates of the flower bed?