How many curve boards does it take to make a complete & perfect circle? August 03, 2020 15:29 8 Curved Boards will make a complete 10.5 ft. Diameter Circle Related articles How many degrees in a curve board? What is the difference between Frame It All 1 Inch and 2 Inch Profile Boards? What is the width of a 2'' Straight or Curved Composite Board? How far does a 2'' Anchor Joint extend into the ground? What is the actual width of a 1'' Straight or Curved Composite Board?