The Taft Public Library is a library built in the shape of a square. The checkout desk is located in the center of the building. You have been asked to help make a map of the library, using a coordinate plane. Since the library is 100 feet on each edge, you have decided to use a coordinate plane from -10 to 10 on each axis. Each unit represents 5 feet. The y-axis runs north-south, and the x-axis runs east-west.
The children's section is rectangular and has three of its corners at (-10,10), (-10,4), and (-3,10). What are the coordinates of the remaining corner?