polygons. what is a polygon? a closed figure made by joining line segments, where each line segment...

POLYGONS

What is a Polygon?

A closed figure made by joining line segments, where each line segment intersects exactly two others

Examples of polygons:

What is Not a Polygon

This figure is not a polygon because it is not a closed figure.

What is Not a Polygon

This figure is not a polygon because it is not made of line segments.

What is Not a Polygon

This figure is not a polygon because its sides do not intersect in exactly two places each.

How is a Polygon classified?

By the number of sides it has

Types of Polygons

Triangle

Quadrilateral

Pentagon

Hexagon

Has three sides

Has four sides

Has five sides

Has six sides

Types of Polygons

Heptagon

Octagon

Nonagon

Decagon

Has seven sides

Has eight sides

Has nine sides

Has ten sides

More About Polygons

You can describe a polygon by comparing: The lengths of

its sides OR The measures

of its angles

Describing Polygons

Equilateral

Equiangular

Regular

All the sides of the polygon are congruent

All the angles of the polygon are congruent

The polygon is both equilateral and equiangular