You already have a good understanding of 3-sided and 4-sided polygons from your previous studies of geometry.

3-sided polygons - **triangles** - all types

(acute, right, obtuse, equiangular, scalene, isosceles, equilateral)

4-sided polygons - **quadrilaterals** - all types

(kite, rhombus, square, trapezoid, parallelogram, rectangle)

We will now enhance these **previous concepts**

by adding more "sides" to the figures,

as well as adding some new information.