Theory:

Geometry may be a very general topic that one can relate practically by visualizing each concept.
 
We can say that each visible mathematical things that we understand are often categorized under geometry.
 
We have seen numerous historical monuments, and these monuments have certain shapes and figures which amaze us.
 
Are they very complex structured?
 
No, they just made by assembling shapes that we learn within the branch of mathematics called “Geometry”.
 
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Referring to the above image, we all know it is the Thanjavur temple (Brihadeeswarar Temple) Now coming to shapes, the urn(kalasam) is round in shape, and all the pillar around the monument are like straight lines.
Some other examples of shapes:
Straight:
  
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Round:
 
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Hence, we will see all the essential objects which are a part of our day-to-day life represents some  geometric shapes.