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Closed curves

Simple Closed Curves

Simple closed curves made of line segments

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WHAT IS A CIRCLE ?

A CIRCLE IS A LOCUS OF A POINT WHICH ARE EQUIDISTANT FROM THE FIXED POINT

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CONSTRUCTION OF A CIRCLE

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CIRCULAR SHAPED OBJECTS

Medal

Coins

Clock

Plate

Tube

Key hole

Ring

Top

APPLICATION

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PATTERNS IN CIRCLES

TOOTHED WHEEL

GRINDING WHEEL

FAN

DESIGNED WHEEL

COLOUR WHEEL

PATTERN OF A CIRCLE

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Did you know we can draw a number of chords to the circle?

Can you guess which is the longest chord?

O

A

B

C

D

E

F

G

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RADII OF THE CIRCLE�

We can draw a number of radii to the circle. All the radii are of equal length.

​

A

C

D

E

F

B

O

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The length of the diameter is always twice the length of the radius.

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FIND ME WITH THE GIVEN CLUES IN THE LETTER MAZE�LOOK VERTICALLY HORIZONTALLY AND DIAGONALLY

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A

B

C

D

E

F

G

H

I

J

R

L

M

C

I

R

C

U

M

F

E

R

E

N

C

E

M

N

R

E

O

P

Q

R

T

S

T

H

U

V

W

D

N

X

Y

Z

E

A

B

C

O

D

E

F

I

T

G

H

M

I

J

K

L

R

M

N

O

U

R

P

A

Q

R

S

T

U

D

V

W

X

S

E

I

Y

R

A

D

I

U

S

F

G

H

I

D

J

K

L

M

N

O

P

Q

R

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RESOURCE MATERIAL

  • C.B.S.E. MATHEMATICS TEXT BOOKS OF CLASSES V, VI, VII
  • Encarta 2000

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