What Is Role Of Geometry In Our Life?

It is absolutely everywhere, from Architecture, to snow flakes - the shape of shells, and the design of cars, planes, bikes.

Think of all the packaging in stores of any product.  For example - a can of beans.  The size of the can dictates the volume of the contents, which in turn will dictate the number of products, from a 'batch' of beans, which will determine, supply!

If you look at flowers you will see that they will mostly have a fibbonacci number of pettals.  The way a fern frond 'unrolls' maps the golden ratio curve.

Plants (even though you can't see it unless in a highle sped up video) rotate towards the sun and this rotation is also the golden ration when mapped.

Think of a regular bicycle - specifically the gear cogs and chain link - how do you calculate the length of chain link - well you have to use circles, tangents, line lengths - you name it!

The geometry required in a profession such as carpentry, or wooden toy making.  You could then move on to the creation of injection molding (the type used to make lego).

Geometry is the study of shape, their size, angles, volumes, surface areas.  Everything in life has shape - even the tiniest of molecules, so geometry is everywhere, and it is so important.

Just think, if the wheel had never been invented!

I hope this helps you a little towards getting a complete answer to this question.