About This Lesson
<p>What is the relationship between the angle at the center and the angles at the circumference, for angles which stand on the same arc? Can you prove it?</p> Aligned to Common Core State Standard: 8.G.5
Standards
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.
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Nice extension activity for the sum of the angles in a triangle.