Obtuse Angles Examples – GeoGebra
circumcenter obtuse – GeoGebra
Dynamic visual proofs using DGS - Document - Gale Academic OneFile
Types of Triangles!, Baamboozle - Baamboozle
Obtuse Angles – GeoGebra
Right angled triangle in geogebra 1.way [Tutorial]
Types of Angles – GeoGebra
Dynamic visual proofs using DGS - Document - Gale Academic OneFile
Types of Triangles(By Sides and Angles) – GeoGebra
Classifying Triangles by Angles – GeoGebra