circle
Definition of circle - Circle is the set (group) of all those points which is equidistant from a fixed point.
this fixed point is called the centre(O) of the circle.
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Concentric circle- (संकेंद्रित वृत्त) If two and more then two circle have same centre but different radii, they are called concentric c...
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sector - sector is an area surrounded by two radii and an arc, as shown is figure. OA and OB is radius and AxB is arc Area of sector = P... -
Secant of a circle - A line which meet a circle into two points is called a secant of the circle, in given figure XY is a secant.
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