GEOMETRY 10.5 Exterior and Interior Angle Measurement Interactions.

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Presentation transcript:

GEOMETRY 10.5 Exterior and Interior Angle Measurement Interactions

10.5 Sum of the Exterior Angle Measures of a Polygon Objectives Write a formula for the sum of the exterior angles of any polygon. Calculate the sum of the exterior angles of any polygon, given the number of sides. Write a formula for the measure of each exterior angle of any regular polygon. Calculate the measure of an exterior angle of a regular polygon, given the number of sides. Calculate the number of sides of a regular polygon, given the measure of each exterior angle.

Problem 1: Is There a Formula?

Collaborate 1-5 (10 Minutes) Together

Problem 2: Regular Polygons Regular polygons have all sides congruent and all angles congruent. Collaborate 1-5 (5 Minutes)

Problem 2: Regular Polygons Together 6-9

Formative Assessment