Math.8.G.5 8.G.A.5 MA.8.GR.1.4 MA.8.GR.1.5 MA.8.GR.1.6

Common Core Standards Angles, Parallel Lines, & Triangles
Grade:	8th Grade
Standard:	Math.8.G.5 or 8.G.A.5
Description:	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 sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.
Standard:	MA.8.GR.1.4
Description:	Solve mathematical problems involving the relationships between supplementary, complementary, vertical or adjacent angles
Standard:	MA.8.GR.1.5
Description:	Solve problems involving the relationships of interior and exterior angles of a triangle
Standard:	MA.8.GR.1.6
Description:	Develop and use formulas for the sums of the interior angles of regular polygons by decomposing them into triangles.

Common Core Standards