What is Geometry?

Geometry is basically the study of shapes and the structure of anything. There are many kind of geometry which shall be discussed in the later half of the paper but the most important of all is the Euclidian Geometry.

Euclidean geometry is the kind we encounter at school, where the angles of a triangle add up to exactly 180o, parallel lines never meet, and so on.

In Euclidian Geometry, the position r of a point in space is given by:

r²= x²+ y²+ z²

Sum of angles of a Triangle as seen by Euclidian Geometry

This is the geometry that we have been learning from our childhood.

Now let us see where Euclidian Geometry is used with respect to space.