Polygon Definition: A closed figure.

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Presentation transcript:

Polygon Definition: A closed figure. How to Name: All capital letters. Use as many letter as sides to the polygon. Some Examples:

Diagonal Definition: a line segment drawn from one vertex to another in a polygon. Picture:

Concave Definition: Polygon dips inward (Some diagonals can be drawn outside the shape). Picture:

Convex Definition: Polygon only points outward. (No diagonals can be drawn outside the shape). Picture:

Convex or Concave?

Regular Polygon Definition: A closed figure, with congruent sides and congruent angles. Picture: All sides and angles marked congruent.

Regular Polygons

Perimeter Definition: Sum of the lengths of the sides. Picture: Perimeter = 26cm