circles
DESCRIPTION
BY. CIRCLES. ANITA. Closed curves. Simple Closed Curves. Simple closed curves made of line segments. WHAT IS A CIRCLE ?. A CIRCLE IS A LOCUS OF A POINT WHICH ARE EQUIDISTANT FROM THE FIXED POINT. CONSTRUCTION OF A CIRCLE. APPLICATION. Medal. CIRCULAR SHAPED OBJECTS. Tube. Key hole. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/1.jpg)
![Page 2: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/2.jpg)
Closed curves
Simple Closed Curves
Simple closed curves made of line segments
![Page 3: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/3.jpg)
WHAT IS A CIRCLE ?WHAT IS A CIRCLE ?
A CIRCLE IS A LOCUS OF A POINT WHICH ARE EQUIDISTANT FROM
THE FIXED POINT
![Page 4: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/4.jpg)
CONSTRUCTION OF A CIRCLECONSTRUCTION OF A CIRCLE
![Page 5: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/5.jpg)
CIRCULAR SHAPED OBJECTS
Medal
CoinsClock
Plate
TubeKey hole
Ring
Top
APPLICATION
![Page 6: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/6.jpg)
PATTERNS IN CIRCLES
TOOTHED WHEEL GRINDING WHEEL FAN
DESIGNED WHEEL
COLOUR WHEEL
PATTERN OF A CIRCLE
![Page 7: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/7.jpg)
![Page 8: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/8.jpg)
![Page 9: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/9.jpg)
Did you know we can draw a number of chords to the circle?
Can you guess which is the
longest chord?O
A
B
CD
E
F
G
![Page 10: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/10.jpg)
RADII OF THE CIRCLE
We can draw a number of radii to the circle. All the radii are of equal length.
A
C
DE
F
B
O
![Page 11: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/11.jpg)
The length of the diameter is always twice the length of the radius.
![Page 12: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/12.jpg)
FIND ME WITH THE GIVEN CLUES IN THE LETTER MAZELOOK VERTICALLY HORIZONTALLY AND DIAGONALLY
• I measure half of the diameter . What is the name given to me?
• I am the distance around the circle. What am I called?
• I lie in the middle of the circle . Who am I?
• I pass through the centre and touch two ends of the circumference. What is my name?
• I am a line segment and my end points lie on the circle. Can you guess the name given to me?
![Page 13: CIRCLES](https://reader036.vdocuments.us/reader036/viewer/2022062723/56813b69550346895da46d0b/html5/thumbnails/13.jpg)
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