tag:blogger.com,1999:blog-36269973.post3989533587383621072..comments2023-12-15T10:06:21.344-05:00Comments on The Mathematical Tourist: Pencil StructureMath Touristhttp://www.blogger.com/profile/00014397210725962876noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-36269973.post-27585125340579166602018-03-19T16:56:37.243-05:002018-03-19T16:56:37.243-05:00is there a way to figure out how many times the pe...is there a way to figure out how many times the pencils intersect?Anonymousnoreply@blogger.com