Definition of each name

A polygon is just a fancy name for any flat shape (also known as a 2-dimensional shape) which is made by drawing straight lines which all join together.

Number of Sides
Name of Polygon
How to remember the name

3
Triangle
The name says that the shape has 3 angles (Tri is an old word for 3) - it also has 3 sides.

4
Quadrilateral
If someone gives birth to "Quads" - they have 4 babies - this shape has 4 sides

5
Pentagon
The number 5 looks like the letter S, put 5 in front of Pent and it looks like Spent - this shape has 5 sides

6
Hexagon
The word Six ends with the letter x and so does Hex (another old word which means six) - this shape has 6 sides

8
Octagon
An octopus has 8 legs - this shape has 8 sides

10
Decagon
The word Decompress has 10 letters and begins with Dec - this shape has 10 sides

Credits: Easymaths

Syafiqah