C H A P T E R 4 O B J E C T I V E S
Why do triangle angles always sum to 180°?. In this lesson you will learn about the interior angles of triangles by looking at their properties.
JRLeon Discovering Geometry Chapter 4.2 HGSH C H A P T E R 4 O B J E C T I V E S Discover and explain sums of the measures of two and three interior.
Students will explicitly define, use, and calculate exterior and interior angles of triangles.
