Circles logoSubject: Mathematics    Exam: NTSE

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Important Points

Equal chords of a circle are equidistant from the center. (Chord Property)
The perpendicular drawn from the centre of a circle, bisects the chord of the circle. (Chord Property)
The angle subtended at the centre by an arc = Double the angle at any part of the circumference of the circle. (Angle Property)
Angles subtended by the same arc in the same segment are equal. (Angle Property)
To a circle, If a tangent is drawn and a chord is drawn from the point of contact, then angle made between the chord and the tangent = Angle made in the alternate segment. (Tangent Property)
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