This lesson covers the basics behind triangles: classifying triangles by sides and angles, the triangle sum theorem, and the exterior angle theorem. The video '5.1 Angles of Triangles (Part 2) - Practice' covers practice problems for this lesson.
5.1 Angles of Triangles (Part 2) - Practice
I solve several examples on this video to help with the understanding of these concepts from the lesson video '5.1 Angles of Triangles (Part 1) - Notes'.
