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  1. 9th
  2. Maths
  3. Circles
  4. Definition of Circle

Definition of Circle

Circles
Maths
Class 9

Overview

Define a circle, its centre, radius, chord, diameter; define its interior, exterior, and circumference; define arcs, sectors, segments.

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Introduction to Circles

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Related Questions to study

The circle whose radius is 1cm then the diameter of the circle is

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If the circle intersects another circle of radius 5 in such a manner that the common chord of maximum length has a slope equal to , then coordinates of centre of are -

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Let represents four distinct positive real numbers other than unity such that represents a point on a circle whose centre lies on y - axis, then is greater than _________.

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and are teh mid-points of two equal chords and respectively of a circle with centre then
(i)
(ii) .

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In the given figure, if is tangent to a circle, the circle is touching the co-ordinate axes and , then the length of the radius is-

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If is on a circle with center then the area of the circle is

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The longest chord of the circle is

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Find the diameter of a circle whose circumference is equal to the some of circumference of circle with radii 10cm,12cm,and 18cm

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A circle has  _________ number(s) of equal chords.

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If the radius of a circle is increased by 10%, then the corresponding area of new circle wil be.........

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