Basic Geometrical Ideas Class 6 PPT

 Page 1


Chapter -IV
Basic Geometrical Ideas 
Page 2


Chapter -IV
Basic Geometrical Ideas 
Geometry
? In this chapter we shall study some basic ideas of
geometry, a very fascinating branch of mathematics.
? Geometry is derived from two Greek words which means
measurement of the earth.
? In fact geometry is the study of objects around you. You
notice that there are objects of various shapes in and
around you. The objective of this chapter is to acquaint you
to some of their properties.
Page 3


Chapter -IV
Basic Geometrical Ideas 
Geometry
? In this chapter we shall study some basic ideas of
geometry, a very fascinating branch of mathematics.
? Geometry is derived from two Greek words which means
measurement of the earth.
? In fact geometry is the study of objects around you. You
notice that there are objects of various shapes in and
around you. The objective of this chapter is to acquaint you
to some of their properties.
Point
? A point is a dot that appears when you put your pencil on 
paper . It is very small and has no length, breadth or even 
height.
? A point is the smallest possible mark that you can make on 
paper with your pencil.
? A point is usually denoted by a capital letter, like A, B, C, 
etc.
Page 4


Chapter -IV
Basic Geometrical Ideas 
Geometry
? In this chapter we shall study some basic ideas of
geometry, a very fascinating branch of mathematics.
? Geometry is derived from two Greek words which means
measurement of the earth.
? In fact geometry is the study of objects around you. You
notice that there are objects of various shapes in and
around you. The objective of this chapter is to acquaint you
to some of their properties.
Point
? A point is a dot that appears when you put your pencil on 
paper . It is very small and has no length, breadth or even 
height.
? A point is the smallest possible mark that you can make on 
paper with your pencil.
? A point is usually denoted by a capital letter, like A, B, C, 
etc.
Line Segment
? A line segment has length, but no breadth and height.
? It has a starting position and an ending position.
? A line segment between two points A and B is denoted by 
AB.
? Between any two points A and B, the shortest distance is 
the line segment AB.
Page 5


Chapter -IV
Basic Geometrical Ideas 
Geometry
? In this chapter we shall study some basic ideas of
geometry, a very fascinating branch of mathematics.
? Geometry is derived from two Greek words which means
measurement of the earth.
? In fact geometry is the study of objects around you. You
notice that there are objects of various shapes in and
around you. The objective of this chapter is to acquaint you
to some of their properties.
Point
? A point is a dot that appears when you put your pencil on 
paper . It is very small and has no length, breadth or even 
height.
? A point is the smallest possible mark that you can make on 
paper with your pencil.
? A point is usually denoted by a capital letter, like A, B, C, 
etc.
Line Segment
? A line segment has length, but no breadth and height.
? It has a starting position and an ending position.
? A line segment between two points A and B is denoted by 
AB.
? Between any two points A and B, the shortest distance is 
the line segment AB.
Line
? A line is a line segment extended beyond the end and 
beginning points of the segment.
? It has infinite length, but no breadth and height.
? We cannot draw a line completely because it would then 
take infinite space.
? It is enough to know just two points on a line to determine 
the line.