Chapter 10 – Circles
Prove that among all the chords of a circle passing through a given point inside the circle that one is smallest which is perpendicular to the diameter passing through the point.
02
Jul
Prove that among all the chords of a circle passing through a given point inside the circle that one is smallest which is perpendicular to the diameter passing through the point. Prove that among all the chords of a circle passing through a given point inside the circle that one is smallest which is perpendicular [...]
Prove that two circles cannot intersect at more than two points.
02
Jul
Prove that two circles cannot intersect at more than two points. Prove that two circles cannot intersect at more than two points. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
In Fig. 10.12, ∠ABC = 45º, prove that OA ⊥ OC.
02
Jul
In Fig. 10.12, ∠ABC = 45º, prove that OA ⊥ OC. ∠ABC = 45º In Fig. 10.12 prove that OA ⊥ OC. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
In Fig. 10.11, AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC.
02
Jul
In Fig. 10.11, AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC. AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC. In Fig. 10.11 July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
Two chords of a circle of lengths 10 cm and 8 cm are at the distances 8.0 cm and 3.5 cm, respectively from the centre
02
Jul
Two chords of a circle of lengths 10 cm and 8 cm are at the distances 8.0 cm and 3.5 cm, respectively from the centre respectively from the centre Two chords of a circle of lengths 10 cm and 8 cm are at the distances 8.0 cm and 3.5 cm July 2, 2021 Category: Chapter [...]
The angles subtended by a chord at any two points of a circle are equal.
02
Jul
The angles subtended by a chord at any two points of a circle are equal. The angles subtended by a chord at any two points of a circle are equal. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
In Fig. 10.2, AB and CD are two equal chords of a circle with centre O. OP and OQ are perpendiculars on chords AB and CD, respectively. If ∠POQ = 150º, then ∠APQ is equal to
02
Jul
In Fig. 10.2, AB and CD are two equal chords of a circle with centre O. OP and OQ are perpendiculars on chords AB and CD, respectively. If ∠POQ = 150º, then ∠APQ is equal to AB and CD are two equal chords of a circle with centre O. OP and OQ are perpendiculars on [...]
In Fig. 10.1, two congruent circles have centres O and O′. Arc AXB subtends an angle of 75º at the centre O and arc A′ Y B′ subtends an angle of 25º at the centre O′. Then the ratio of arcs A X B and A′ Y B′ is:
02
Jul
In Fig. 10.1, two congruent circles have centres O and O′. Arc AXB subtends an angle of 75º at the centre O and arc A′ Y B′ subtends an angle of 25º at the centre O′. Then the ratio of arcs A X B and A′ Y B′ is: In Fig. 10.1 two congruent circles [...]
14. In Fig. 10.21, O is the centre of the circle, BD = OD and CD ⊥ AB. Find ∠CAB.
02
Jul
14. In Fig. 10.21, O is the centre of the circle, BD = OD and CD ⊥ AB. Find ∠CAB. 14. In Fig. 10.21 BD = OD and CD ⊥ AB. Find ∠CAB. O is the centre of the circle July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
13. In Fig. 10.20,O is the centre of the circle, ∠BCO = 30°. Find x and y
02
Jul
13. In Fig. 10.20,O is the centre of the circle, ∠BCO = 30°. Find x and y ∠BCO = 30°. Find x and y 13. In Fig. 10.20 O is the centre of the circle July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,