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Overview:
Lesson OverviewStudents explore different polygons by drawing them, measuring angles, and manipulating interactive sketches to find the angle sum for any polygon. Students also explore the angle measures in regular polygons.Key ConceptsThe angle sum in a triangle is 180°. A quadrilateral can be composed of two triangles, so the angle sum of a quadrilateral is 360°.The number of triangles that compose a polygon is two less than the number of sides (angles). The sum of the interior angles in a polygon with n sides is 180° (n – 2).Goals and Learning ObjectivesFind angle sums in polygons.Generalize to find the angle sum for any polygon.Find interior angle measures for regular polygons. 
Subject:
Geometry
Level:
Middle School
Grades:
Grade 7
Material Type:
Lesson Plan
Date Added:
09/21/2015
License:
Creative Commons Attribution Non-Commercial
Language:
English
Media Format:
Interactive, Text/HTML

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