Final answer:
The type of screw that is shaped like a square is called a Robertson screw. It provides higher torque and prevents slipping during installation.
Step-by-step explanation:
The type of screw that is shaped like a square is called a Robertson screw. It is named after its inventor, P.L. Robertson. The square shape of the screw helps to provide a higher torque and prevents slipping during installation. Robertson screws are commonly used in construction and woodworking projects.