Understand the resultant of 2 unidirectional forces at one capture point. Understand the resultant of 2 forces in opposite directions at one capture point. Understand the resultant of 2 forces that form an angle of 900 at one capture point. Understand the resultant of 2 forces that form an arbitrary angle at one capture point. Understand the resultant for more than 2 forces at one capture point. Understanding Varignon‘s Moment theorem. Understand the graphical requirements for balance of a plane style arrangement. Understand the requirements of balance techniques. Understand how to determine the center of gravity of flat images. Understanding Cremona diagrams for flat frames. Understand the Culman and Ritter intersection methods