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Topic: Circle
Class: 9th
Medium: English
Let’s start module
1
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
Let’s start module
2
Circle
A circle is a closed curve consisting of all the parts in a
plane which are at the same distance from a fixed points
inside it. This fixed point inside a circle is called centre. A
circle has one and only one center. Example of circle
Bangle, CDS, cycle, and Round Table. Circle in which a
line segment that joins any points on the circle to its
centre is called a radius. A line segment that join any two
points on the circle are passes through its centre is called
diameter. A line segment that joins any two points on the
circle is called a chord and a line that intersects the circle
at any two points on the circle is called secant. And it is a
line that cross the circle at exactly one points on the circle.
This point is called of tangency.
3
Q1:Circle is a ………figure
-Four sided figures
-Three sided figure
-Closed figure
-none of the above
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7
Q2:How many center are there in one
circle
-4
-3
-2
-1
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11
Q3: In a circle, two times the Radius is
called……
-Diameter
-chord
-Tangent
-Secant
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15
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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Hint!
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19
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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Hint!
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23
Congratulations you have Scored 50
marks!
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