Lesson 2 Two Dimensional Figures - static1.1.sqspcdn.com

Lesson 2 Two Dimensional Figures

Polygons

Polygon

Not a polygon

What is a polygon?

? A polygon is.....

? a closed figure in a plane, formed by connecting line segments endpoint to endpoint with each segment intersecting exactly two others.

You can classify a polygon by the number of sides it has.

Sides Name

3

Triangle

4

Quadrilateral

5

Pentagon

6

Hexagon

Sides Name

7

Heptagon

8

Octagon

9

Nonagon

10

Decagon

Diagonal

? A diagonal of a polygon is ....

? a segment that connects two nonconsecutive vertices.

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