CBSE Class 6 Maths Chapter 4 - Basic Geometrical Ideas Formulas

Hey there! We receieved your request. This has 2 equivalents. The two lines that share one common point are called Intersecting Lines. Closed Curve � Curve that does not have an endpoint byjus class 6 maths chapter 4 form is an enclosed figure. The black line which is dividing byjus class 6 maths chapter 4 form interior and exterior of the curve is the boundary.

Adjacent Vertices � It refers to the endpoints of the same side of the polygon. Diagonals � It refers to the joins of the vertices which are not adjacent to each. As in the above figure, AC and BD are diagonals of the polygon.

Radius � It is a straight line connecting the centre of the circle to the boundary of the. Diamete r �It is a straight line from one side of the circle to the other side passing through the centre. Chord - Any line that connects two points on the boundary of the circle is called Chord. Diameter is the longest chord. Interior of the Circle � Area inside the boundary of the circle is called the Interior of the Circle.

The Exterior of the Circle � Area outside the boundary of the circle is called the Exterior of the Circle. Sector - It is the region in the interior of a circle enclosed by an arc on one side and a pair of radii on the other two sides.

Segment - It is the region in the interior of the circle enclosed by an arc and a chord. A diameter divides the circle into two semi-circles. Hence the semicircle is the half of the circle, which has the diameter as the part of the boundary of the semicircle. DearPreparing for entrance exams? Register yourself for the free demo class from askiitians. Please choose valid. Please Enter the valid Email. Select Grade 6th 7th 8th 9th 10th 11th 12th 12th Pass Please choose the valid grade. We receieved your request Stay Tuned as byjus class 6 maths chapter 4 form are going to contact you within 1 Hour Close.

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Registration done! Sit and relax as our customer representative will contact you within 1 business day Continue. Points It is a position or location on a plane surface, which are denoted by a single capital letter. Line Segment It is a part of a line with the finite length and 2 endpoints. The points A and B are called the endpoints of the segment. It is named as: Line It is made up of infinitely many points with infinite length and no endpoint.

It extends indefinitely in both directions. This shared point is called the point of intersection. Here, line l and m are intersecting at point C. Real life example of intersecting lines: Parallel Lines Two or more lines that never intersect Never cross each other are called Parallel Lines. Real life examples of parallel lines: Ray It is a part of a line with one starting point whereas extends endlessly in one direction.

Real life examples of the ray are: Curves Anything which is not straight is called a curve. Simple Curve byjus class 6 maths chapter 4 form A curve that does not cross. Open Curve � Curve in which its endpoints do not meet.

A closed curve has 3 parts which are as follows 1. The blue coloured area is the interior of the figure. The exterior of the curve. The point marked A depicts the exterior of the curve. The boundary of the curve It refers to the dividing line thus it divides the interior and exterior of the curve. Angles A figure formed from 2 rays which share a common endpoint is called Angle. The rays forming the angle are known as its arms or sides.

The common endpoint is known as its vertex. An angle is also associated with 3 parts 1. The green coloured area is the interior of the angle. The red point is on byjus class 6 maths chapter 4 form arm of the angle.

The blue point depicts the exterior of the figure. Naming an Angle While naming an angle the letter depicting the vertex appears in the middle. An angle can also be named just by its vertex. Example Triangle It is a 3 sided polygon. It is also the polygon with the least number of the sides. The black line is the boundary.

Whereas, the dark blue area is the exterior of the angle. Circles It is a simple closed curve and is not considered as a polygon. Parts of Circles 1. Circumferenc e � It refers to the boundary of the circle. Arc � It is the portion of the boundary of the circle. Semi-circle A diameter divides the circle into two semi-circles.

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We are here to help you in Education. Is the triangle distorted? Clear your doubt then and there. Click on the name of the chapter for which you want to check the solutions and you will be directed to the page for that chapter. Getting your basics clear at this point will make it easier for you to handle difficult concepts as you grow older. So, it is of utmost importance to take Mathematics seriously right from your early school life.

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