Topic: Circle Class: 9th

Medium: English

Let’s start module

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Programmed Instructional material

Objectives

At the end of this module you will be able to:-

Define the concept of circle

Know the formula of area of circle

define the parts of circle

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Circle

A circle is a closed curve consisting of all the parts in aplane which are at the same distance from a fixed pointsinside it. This fixed point inside a circle is called centre. Acircle has one and only one center. Example of circleBangle, CDS, cycle, and Round Table. Circle in which aline segment that joins any points on the circle to itscentre is called a radius. A line segment that join any twopoints on the circle are passes through its centre is calleddiameter. A line segment that joins any two points on thecircle is called a chord and a line that intersects the circleat any two points on the circle is called secant. And it is aline that cross the circle at exactly one points on the circle.This point is called of tangency.

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Q1:Circle is a ………figure

-Four sided figures

-Three sided figure

-Closed figure

-none of the above

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Q2:How many center are there in one circle

-4

-3

-2

-1

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Q3: In a circle, two times the Radius is called……

-Diameter

-chord

-Tangent

-Secant

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Q4: A line segment that joins any two points on the circle is called ….

-Radius

-Diameter

-Chord

-None of the above

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Q5:The line that intersects the circle at exactly one point on the circle is called-

-Secant

-Tangent

-Diameter

-All of the above

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Congratulations you have Scored 50 marks!

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