Lesson plan

Calculate the measure of a central angle by identifying the measure of its minor arc

teaches Common Core State Standards CCSS.Math.Content.HSG-C.A.2 http://corestandards.org/Math/Content/HSG/C/A/2

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Big Ideas: Understand that circles can be identified and described by their radii, chords, and angles (central, inscribed, and circumscribed). This task will engage students in naming and using precise language of a circle's radii, angles, chords, and arcs. The students explore the relationship between a central angle and its minor arc. Vocabulary: radius, radii, chords, central angle, minor arc Special Materials: straightedge