This PowerPoint presentation defines key terms related to circles such as radius, diameter, circumference, chord, arc, sector, and segment. A circle is defined as the locus of all points equidistant from a central point called the center. The radius is the distance from the center to any point on the circle while the diameter passes through the center and is the longest chord. The circumference is the distance around the circle which is equal to 2πr. An arc is a curved line that is part of the circumference, and a sector or segment are regions bounded by radii and arcs or chords.

1. MULTIMEDIA
POWERPOINT
PRESENTATION

2. GEENA GEORGE
REG NO:18014384001
B.Ed MATHEMATICS

3. CIRCLES

4. WHAT IS A CIRCLE?
A CIRCLE IS THE
LOCUS OF ALL
POINTS EQUIDISTANT
FROM A CENTRAL
POINT.

5. CENTRE OF A CIRCLE
THE POINT
EQUIDISTANT FROM
THE POINTS ON THE
CIRCLE.

6. RADIUS OF A CIRCLE
DISTANCE FROM CENTRE OF
CIRCLE TO ANY POINT ON IT.
IT IS DENOTED BY THE
LETTER ‘r’.

7. CHORD
A LINE SEGMENT WITHIN
A CIRCLE THAT
TOUCHES TWO POINTS
ON THE CIRCLE.

8. DIAMETER OF A CIRCLE
DIAMETER OF A CIRCLE IS ANY STRAIGHT LINE
SEGMENT THAT PASSES THROUGH THE CENTRE OF
THE CIRCLE AND WHOSE ENDPOINTS LIE ON THE
CIRCLE.
 IT CAN ALSO BE DEFINED AS THE
LONGEST CHORD OF THE CIRCLE.
DIAMETER IS THE DOUBLE OF RADIUS
 d = 2r

9. CIRCUMFERENCE
IT IS THE DISTANCE AROUND
THE CIRCLE
CIRCUMFERENCE OF A CIRCLE =
2πr,WHERE π =22/7 (3.14159...)

10. ARC
A CURVED LINE THAT IS PART OF
THE CIRCUMFERENCE OF A
CIRCLE

11. SECTOR
A REGION BOUNDED BY
TWO RADII AND AN ARC
LYING BETWEEN THE
RADII.

12. SEGMENT
A REGION NOT CONTAINING
THE CENTRE, BOUNDED BY A
CHORD AND AN ARC LYING
BETWEEN THE CHORD'S
ENDPOINTS

14. THANK YOU