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In this lesson, we learn that a polygon is a figure made up of line segments. The number of line segments determine what type of polygon the figure is. Regular polygons are polygons where the sides have the same length. You will learn about triangles with 3 sides, squares, rectangles, rhombus, and parallelograms with 4 sides, pentagons with 5 sides, and hexagons which have 6 sides. Many problems in geometry and trigonometry rely on knowledge of polygons.
