Posted without further comment π»
Posted without further comment π»
I'm saving this for the quadrilaterals unit. Although, I do think we define "sides" to be "straight lines" which has its own problems as an undefined term. Still I like this.
@futurebird @AlisonW @salgood
The Jordan Curve Theorem?
But also see e.g. this (older article) for several practical implementations for point-in-polygon testing: