16S3: EM Circle Properties lesson 1 by Gary Ang | Jul 11, 2016 | 16S3, Board-casts | 0 comments [vimeography id="593"] In this lesson, we started on EM circle properties. We discussed chord and tangent. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ