How can you use regular polygons in your daily lives?

Answer 1

Regular polygon = n-gon which means the shape must have equal points & sides, and all sides must be equal and all angles must be equal.

equilateral triangle is technically a regular polygon, and can go up to whatever, the sky's the limit in size and complexity.

regular polygons can be used for lots of things useful. Computer programming algorithms and formulas for many things can be derived from shapes, video game programmers must use polygons to model the details in Video Games, since perfect circles or other shapes are more graphically intense in any 3d game, polygons are used to add detail and efficiency of the graphics, making it undistinguishable to the human eye but in computing terms it is WAY more efficient to use polygons as shapes. Also desigas from houses, to products you buy, even some company logos use shapes or polygons to make or construct their logo image, or branding mark. Graphic designers also use polygons and other mathematical equations for images, smooth vector images (the images that never blur the more you zoom in, that's vector art!! Aka Math,!!!

in all, I hope this helped you out, in what I'm assuming is your homework assignment or at least part of it. :-p