Polygons
Is it a polygon? Is it a closed figures with straight edges?
Naming Polygons
Polygons are named based on the number of sides in the figure.
3 sides: triangle
4 sides: quadrilateral
5 sides: pentagon
6 sides: hexagon
7 sides: heptagon
8 sides: octagon
Special Quadrilaterals
Some quadrilaterals have special characteristics.