20150414 (Tue)-Sec3 A Math coordinate geometry by Gary Ang | Apr 14, 2015 | 16S4, Board-casts | 0 comments[vimeography id="102"] We discussed Circum-circle, in-circle, shoe-lace method.Submit a Comment Cancel replyYour email address will not be published.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