Theorems

Class 9 Chapter 10 Circles Theorem 10.11 : The sum of either pair of opposite angles of a cyclic quadrilateral is 180º.

Class 9 Chapter 10 Circles Theorem 10.11 : The sum of either pair of opposite angles of a cyclic quadrilateral is 180º. Class 9 Chapter 10 Circles Theorems Theorem 10.1 : Equal chords of a circle subtend equal angles at the centre. Theorem 10.2 : If the angles subtended by the chords of a circle […]

Class 9 Chapter 10 Circles Theorem 10.11 : The sum of either pair of opposite angles of a cyclic quadrilateral is 180º. Read More »

Class 9 Chapter 10 Circles Theorem 10.10 : If a line segment joining two points subtends equal angles at two other points lying on the same side of the line containing the line segment, the four points lie on a circle (i.e. they are concyclic).

Class 9 Chapter 10 Circles Theorem 10.10 : If a line segment joining two points subtends equal angles at two other points lying on the same side of the line containing the line segment, the four points lie on a circle (i.e. they are concyclic). Class 9 Chapter 10 Circles Theorems Theorem 10.1 : Equal

Class 9 Chapter 10 Circles Theorem 10.10 : If a line segment joining two points subtends equal angles at two other points lying on the same side of the line containing the line segment, the four points lie on a circle (i.e. they are concyclic). Read More »

Class 9 Chapter 10 Circles Theorem 10.8 : The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle.

Class 9 Chapter 10 Circles Theorem 10.8: The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle. Class 9 Chapter 10 Circles Theorems Theorem 10.1 : Equal chords of a circle subtend equal angles at the centre. Theorem 10.2

Class 9 Chapter 10 Circles Theorem 10.8 : The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle. Read More »

Class 9 Chapter 10 Circles Theorem 10.7 : Chords equidistant from the centre of a circle are equal in length.

Class 9 Chapter 10 Circles Theorem 10.7 : Chords equidistant from the centre of a circle are equal in length. Class 9 Chapter 10 Circles Theorem 10.7 : Chords equidistant from the centre of a circle are equal in length. Class 9 Chapter 10 Circles Theorems Theorem 10.1 : Equal chords of a circle subtend

Class 9 Chapter 10 Circles Theorem 10.7 : Chords equidistant from the centre of a circle are equal in length. Read More »

Class 9 Chapter 10 Circles Theorem 10.6 : Equal chords of a circle (or of congruent circles) are equidistant from the centre (or centres).

Class 9 Chapter 10 Circles Theorem 10.6 : Equal chords of a circle (or of congruent circles) are equidistant from the centre (or centres). Class 9 Chapter 10 Circles Theorem 10.6 : Equal chords of a circle (or of congruent circles) are equidistant from the centre (or centres). Class 9 Chapter 10 Circles Theorems Theorem

Class 9 Chapter 10 Circles Theorem 10.6 : Equal chords of a circle (or of congruent circles) are equidistant from the centre (or centres). Read More »

Class 9 Chapter 10 Theorem 10.5 : There is one and only one circle passing through three given non-collinear points.

Class 9 Chapter 10 Theorem 10.5 : There is one and only one circle passing through three given non-collinear points. Class 9 Chapter 10 Theorem 10.5 : There is one and only one circle passing through three given non-collinear points. Class 9 Chapter 10 Circles Theorems Theorem 10.1 : Equal chords of a circle subtend

Class 9 Chapter 10 Theorem 10.5 : There is one and only one circle passing through three given non-collinear points. Read More »

Class 9 Chapter 10 Theorem 10.4 : The line drawn through the centre of a circle to bisect a chord is perpendicular to the chord.

Class 9 Chapter 10 Theorem 10.4 : The line drawn through the centre of a circle to bisect a chord is perpendicular to the chord. Class 9 Chapter 10 Theorem 10.4 : The line drawn through the centre of a circle to bisect a chord is perpendicular to the chord. Class 9 Chapter 10 Circles

Class 9 Chapter 10 Theorem 10.4 : The line drawn through the centre of a circle to bisect a chord is perpendicular to the chord. Read More »

Class 9 Chapter 10 Theorem 10.3 : The perpendicular from the centre of a circle to a chord bisects the chord.

Class 9 Chapter 10 Theorem 10.3 : The perpendicular from the centre of a circle to a chord bisects the chord. Class 9 Chapter 10 Theorem 10.3 : The perpendicular from the centre of a circle to a chord bisects the chord. Class 9 Chapter 10 Circles Theorems Theorem 10.1 : Equal chords of a

Class 9 Chapter 10 Theorem 10.3 : The perpendicular from the centre of a circle to a chord bisects the chord. Read More »

Class 9 Chapter 10 Theorem 10.2 : If the angles subtended by the chords of a circle at the centre are equal, then the chords are equal

Class 9 Chapter 10 Theorem 10.2 : If the angles subtended by the chords of a circle at the centre are equal, then the chords are equal Class 9 Chapter 10 Theorem 10.2 : If the angles subtended by the chords of a circle at the centre are equal, then the chords are equal Class

Class 9 Chapter 10 Theorem 10.2 : If the angles subtended by the chords of a circle at the centre are equal, then the chords are equal Read More »

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