What is the easy way to remember polygon?

A simple way to remember polygons is to think of the prefix "poly," which means "many," and "gon," which means "angles." Visualize common shapes: a triangle (3 sides), quadrilateral (4 sides), pentagon (5 sides), and so forth. You can also use Mnemonic Devices, like associating the number of sides with familiar objects (e.g., a stop sign is an octagon with 8 sides). This helps reinforce the concept of polygons as shapes with multiple straight sides and angles.