The sums of the interior angles of a triangle, a quadrilateral, a pentagon, and a hexagon are

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The sums of the interior angles of a triangle, a quadrilateral, a pentagon, and a hexagon are 180°, 360°, 540°, and 720°, respectively. Use this pattern to find a formula for the general term, an ,where an represents the sum of the interior angles of an n-sided polygon.

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A Survey of Mathematics with Applications

ISBN: 978-0134112107

10th edition

Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde

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