Understanding Angles and Directions in a Square

The video tutorial explains how to determine the angle of rotation for a character named Stefan as he turns anticlockwise and clockwise on a square grid. Initially, Stefan turns 90 degrees anticlockwise from point F to D. The tutorial then covers the concept of clockwise movement, where Stefan turns three right angles from D, ending at point B. The video emphasizes understanding the direction of movement and calculating angles accurately, while also highlighting common mistakes students make in such problems.

Why is it important to identify the letter Stefan is facing after his turns rather than just the angle?

What is the significance of the quarter of the square in relation to Stefan's turn?