Open Middle: Interior and Exterior Angles of Triangles

Creation of this resource was inspired by an Open Middle problem posted by [url=https://twitter.com/sydowjay]Jay Sydow[/url].[br][br][size=150][size=200][b][url=https://www.geogebra.org/m/zkd3chcb]The full resource can be found here[/url][/b]. [/size][/size]

Information: Open Middle: Interior and Exterior Angles of Triangles