Exterior Angle of Triangle Posted on 09-07-202311-07-2023 By app.cch No Comments on Exterior Angle of Triangle Result: $a+b=c$ Reference: ext. $\angle$ of $\Delta$ Same Topic: Angle Sum of Triangle Condition for Isosceles Triangle Condition for Right-angled Triangle Conditions for Congruent Triangles Math, Measures, Shape and Space, Revision Note, Triangles
