#### DESCRIPTION:

Sal gives a formal proof that theÃ¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½measures of interior angles of a triangle sum to 180Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½Ã¯Â¿Â½.

#### OVERVIEW:

Finding angle measures 2 is a free educational video by Khan Academy.It helps students in grades 8 practice the following standards 8.G.A.5.

This page not only allows students and teachers view Finding angle measures 2 but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.

**
1. 8.G.A.5 :** Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the three angles appear to form a line, and give an argument in terms of transversals why this is so..

GRADES:

**8**

STANDARDS:

**8.G.A.5**