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Lesson 1.6

Lesson 1.6. Classify Polygons. Objective. Classify Polygons. Standard. 12.0 – Students find and use measures of sides and of interior and exterior angles of triangles and polygons to classify figures and solve problems. Academic Language. Polygon Convex Concave n- gon Equilateral

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Lesson 1.6

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  1. Lesson 1.6 Classify Polygons

  2. Objective • Classify Polygons

  3. Standard • 12.0 – Students find and use measures of sides and of interior and exterior angles of triangles and polygons to classify figures and solve problems.

  4. Academic Language • Polygon • Convex • Concave • n-gon • Equilateral • Equiangular • regular

  5. Polygon • A figure formed by 3 or more line segments called sides and can only intersect at most one other side. • Each endpoint of a side of a polygon is a vertex • Polygons can be named by listing vertices in consecutive order

  6. Convex Polygon • A polygon where no side contains an interior point of the polygon • A polygon that is not convex is called non-convex polygon or ……. Concave polygon

  7. Examples

  8. Exampls

  9. Classify Polygons • Named by the number of sides

  10. n-gon • General polygon • Can be used to name any polygon Example 14 sides 14-gon

  11. Equilateral Polygon • All sides are congruent

  12. Equiangular Polygon • All angles in the interior of the polygons are congruent

  13. Regular Polygon • Convex polygon that is both equiangular and equilateral

  14. Example

  15. The real world

  16. Homework p.44 #1, 3, 7, 11, 17, 23, 38

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