1. + Angle Relationships in Triangles Geometry Farris 2015

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

3. + Theorem 4-3-1 Triangle Sum Theorem The sum of the angles measures of a triangle is 180 degrees.

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

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7. + Angle Z is an exterior angle. Its remote interior angles are angles 2 and 3. 1 2 3

8. + 4-3-4 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.

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10. + 4-3-5 Third Angles Theorem

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