Select the correct answer from each drop-down menu. A square rotated about its center by. 360° maps onto itself at 01 02 03 04 different angles of rotation. You can reflect a
square onto itself across 02 04 08 016 different lines of
lines of reflection

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?