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Polygons

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  1. Polygons Section 1-6

  2. polygon – a many-sided figure • convex polygon – a polygon such that no line containing a side of the polygon contains a point in the interior of the polygon.

  3. concave convex

  4. 3 sides: triangle • 4 sides: quadrilateral • 5 sides: pentagon • 6 sides hexagon • 8 sides: octagon • 10 sides: decagon • n sides: n-gon

  5. diagonal – a segment joining 2 nonconsecutive vertices of the polygon When referring to a polygon, list its consecutive vertices in order. B A F C E D

  6. Theorem 2-13 • The sum of the measures of the angles of a convex polygon with n sides is

  7. Theorem 2-14 • The sum of the measures of the exterior angles of any convex polygon, one angle at each vertex is 360.

  8. regular polygon – a polygon that is both equiangular and equilateral

  9. Joke Time Where do math teachers go on vacation? To Times Square

  10. Why did the foal cough? Because he was a little horse!

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