<human>: How would someone go about accomplishing this goal?
to determine the center of 4x4 plywood

OPTIONS:
- make two lines from the corner to the opposite corner, mark the point where two lines cross each other
- make two lines from the corner to the next corner, mark the point where two lines cross each other
<bot>: make two lines from the corner to the opposite corner, mark the point where two lines cross each other