1. 8117-1. A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to A. draw two non-parallel chord lines across the circle and then a corresponding perpendicular bisector line across each chord line. B. draw two parallel chord lines across the circle and then a corresponding perpendicular bisector line across each chord line. C. draw a single chord line across the circle and then a corresponding perpendicular bisector line across each chord line.