17 Dec
2018
17 Dec
'18
2:25 p.m.
In his video "How to Make a Paper Snowflake" ( https://www.youtube.com/watch?v=BIiEsIDenTk&feature=youtu.be ) Matt Parker shows how to trisect a 180 degree angle by pulling a fold in a constrained fashion until it meets a certain point. It seems to me that this method should allow one to construct some angles that can't be trisected with straightedge and compass. And I suspect it's one of the already-studied construction methods that go beyond straightedge and compass. Do any of you know anything about this? Thanks, Jim Propp