What is an Included Angle - Congruent Triangles

The video tutorial explains the concept of an included angle, which is the angle between two sides of a triangle. It discusses the importance of included angles in determining triangle congruence, specifically using the side-angle-side (SAS) rule. The tutorial highlights common mistakes made when identifying included angles and emphasizes the necessity of having the angle between the two sides for congruence. The video also covers the side-side-side (SSS) rule for congruence and stresses the importance of equal side lengths and angles in congruent triangles.

What mistakes do people commonly make regarding included angles?

Describe the conditions necessary for two triangles to be considered congruent using the side-angle-side method.