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Published byLucinda Matthews Modified over 2 years ago

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By Dave Crispin ENTER

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Welcome to the Polygon Classification Stand Alone Instructional Resource (StAIR). This StAIR will define several terms that are used to classify polygons. A five question quiz follows the lessons.

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Classification BY SIDES CONVEX CONCAVE EQUILATERAL EQUIANGULAR REGULAR

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Classification of Polygons By Sides Polygons are named by the number of sides it has. 3 sides = triangle 4 sides = quadrilateral 5 sides = pentagon 6 sides = hexagon 7 sides = septagon 8 sides = octagon 9 sides = nonagon 10 sides = decagon 12 sides = dodecagon Examples

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# of sides = 3 Triangle # of sides = 6 Hexagon # of sides = 5 Pentagon # of sides = 10 Decagon Go to Convex/Concave

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Convex and Concave A polygon is convex if no diagonals from any two vertices go outside the polygon. A polygon is concave is any diagonal goes outside of the polygon. **An easy way to remember is concave looks like a cave. Convex Concave Go to Equilateral/Equiangular/Regular

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Equilateral/Equiangular/Regular Equilateral – all sides are the same length. Equiangular – all angles have the same measure. Regular – both equilateral and equiangular. Examples

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Equilateral – all sides are the same length. Equiangular – all angles are the same measure. Regular – all sides are the same length and all angles are the same measure.

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Quiz Instructions This quiz has five multiple choice questions. If, at any time, you want to go back to the lessons, then click on the “home” button. Click HERE to begin the quiz.HERE Good luck!

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Quiz Question #1 Skip to Question #2 Classify the polygon. A.Convex Equilateral PentagonConvex Equilateral Pentagon B.Convex Equilateral QuadrilateralConvex Equilateral Quadrilateral C.Convex Equiangular QuadrilateralConvex Equiangular Quadrilateral D.Concave Equiangular PentagonConcave Equiangular Pentagon E.Concave Equilateral QuadrilateralConcave Equilateral Quadrilateral

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Quiz Question #2 Go back to Question #1 Classify the polygon. A.Convex Equilateral PentagonConvex Equilateral Pentagon B.Convex Equilateral HexagonConvex Equilateral Hexagon C.Convex Regular PentagonConvex Regular Pentagon D.Concave PentagonConcave Pentagon E.Concave HexagonConcave Hexagon Skip to Question #3

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Quiz Question #3 Go back to Question #2 Select the Convex Regular Pentagon A. Skip to Question #4 E.D.C.B.

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Quiz Question #4 Go back to Question #3 Classify the polygon. A.Convex HeptagonConvex Heptagon B.Convex OctagonConvex Octagon C.Convex NonagonConvex Nonagon D.Concave HeptagonConcave Heptagon E.Concave NonagonConcave Nonagon Skip to Question #5

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Quiz Question #5 Go back to Question #4 Select the Dodecagon. A. E.D.C.B.

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Go to Question #2

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Go to Question #3

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Go to Question #4

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Go to Question #5

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End of Quiz

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Back to Question #1

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Back to Question #2

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Back to Question #3

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Back to Question #4

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Back to Question #5

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POLYGONS. What is a Polygon? A closed figure made by joining line segments, where each line segment intersects exactly two others Examples of polygons:

POLYGONS. What is a Polygon? A closed figure made by joining line segments, where each line segment intersects exactly two others Examples of polygons:

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