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2006-08-06
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The students will investigate the sum of the interior angles of various triangles and conjecture and prove the following theorem: • The sum of the interior angles in a triangle is 180° . The extension activities include conjecturing and proving the following theorems: The sum of the interior angles in a quadrilateral is 360° . The sum of the measures of the interior angles in a convex n-gon is 180°(n-2).
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Questions, comments or suggestions about this model may be sent to Dr. Leigh Little, llittle@brockport.edu, The College at Brockport.