# Fundamental Concepts of Geometry

Geometry is one of the important part of mathematics.

The following picture will help us to get the idea about point.

1. Draw a straight path from Sam’s house to the school.

2. Draw a straight path from the factory to the hospital.

3. Write A at the place where the paths cross.

4. The place where the paths cross in a point. We can use a small dot to make a picture of a point A. When two lines meet we get a point.

5. Observe the picture of the path drawn below. We have shown a point on this path. The name of this point is T.

6. Show another point on the same path. Name it point P.

Line and Curves:

There are two paths shown through the point A and B. The point l follows the shortest distance from A and B.

It is a line. We name a line by two of its points. We may write the name for the straight line l as AB. The other line m is a curve.

The line segment AB is a part of the line p. A line segment stops while a line does not stop.

The line goes on and on in both directions. That is why it is shown by two arrows.

Closed curves:

We will observe how the picture looks like when the curve is closed and when it is not.

 This curve is closed. This curve is not closed.

Closed curves – inside and outside:

We will observe how the picture looks like when the objects are inside and outside the closed figure.

 Objects are inside the closed figure. Objects are outside the closed figure.

● Geometry

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