+ Angle Relationships in Triangles Geometry Farris 2015.

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Presentation transcript:

+ Angle Relationships in Triangles Geometry Farris 2015

+ I can find the measure of and apply the theorems about interior and exterior angles of triangles.

+ Theorem Triangle Sum Theorem The sum of the angles measures of a triangle is 180 degrees.

+

+ Corollary - A theorem whose proof follows directly from another theorem.

+

+ Angle Z is an exterior angle. Its remote interior angles are angles 2 and

Exterior Angle Theorem The measure of an exterior angle of a triangle is equal to the sum of the measures of its remote interior angles.

+

Third Angles Theorem

+