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A B\ a n d\ C D are diameters of a cir...

`A B\ a n d\ C D` are diameters of a circle with centre `Odot` If `/_O B D=50^0,` find `/_A O C`

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If A ,\ B ,\ C are three points on a circle with centre O such that /_A O B=90^0 and /_B O C=120^0, then /_A B C= (a) 60^0 (b) 75^0 (c) 90^0 (d) 135^0

In Fig. 10.36, A,B and C are three points on a circle with centre O such that \ /_B O C=\ 30^o and \ /_A O B =\ 60^o . If D is a point on the circle other than the arc ABC, find /_A D Cdot

If A B ,\ B C\ a n d\ C D are equal chords of a circle with O as centre and A D diameter, then /_A O B= (a) 60^0 (b) 90^0 (c) 120^0 (d) none of these

In Figure, A B\ a n d\ A C are two equal chords of a circle whose centre is O . If O D\ _|_A B\ a n d\ O E\ _|_A C , prove that /_\A D E is an isosceles triangle.

Two lines A B\ a n d\ C D intersect at Odot If /_A O C+/_C O B+/_B O D=270^0 , find the measures of /_A O C ,\ /_C O B ,\ /_B O D and /_D O A .

Two lines A B\ a n d\ C D intersect at Odot If /_A O C+/_C O B+/_B O D=270^0 , find the measures of /_A O C ,\ /_C O B ,\ /_B O D and /_D O A .

Two straight lines A B\ a n d\ C D intersect one another at the point Odot If /_A O C+/_C O B+/_B O D=274^0, then /_A O D=

In the given figure A B is the diameter of the circle, centred at Odot If /_C O A=60^0,A B=2r ,A C=d , and C D=l , then l is equal to (a) dsqrt(3) (b) d//sqrt(3) (c) 3d (d) sqrt(3) d /2

The diagonals of a rectangle A B C D meet at Odot If /_B O C=44^0, find /_O A Ddot

The diagonals of a rectangle A B C D meet at Odot If /_B O C=44^0, find /_O A Ddot

RD SHARMA ENGLISH-CIRCLE -All Questions
  1. If A B C D is a cyclic quadrilateral in which A D || B C . Prove tha...

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  2. In Figure, O is the centre of the circle. Find /C B D

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  3. A B\ a n d\ C D are diameters of a circle with centre Odot If /O B D...

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  4. On a semi-circle with A B as diameter, a point C is taken, so...

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  5. In a cyclic quadrilateral A B C D, if AB || CD\ a n d\ /B=70^0, find...

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  6. In a cyclic quadrilateral A B C D , if /A=3 /C. Find /A

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  7. In Figure, O is the centre of the circle and /D A B=50^0dot Calcula...

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  8. In Figure, if /B A C=60^0\ a n d\ /B C A=20^0,\ find /A D C

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  9. In Figure, if A B C is an equilateral triangle. Find /B D C\ a n d\...

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  10. In Figure, O is the centre of the circle. If /C E A=30^0, find the ...

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  11. In Figure, /B A D=78^0,\ /D C F=x^0a n d\ /D E F=y^0dot Find the va...

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  12. In a cyclic quadrilateral A B C D , if /A-\ /C=60^0, prove that ...

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  13. In Figure, A B C D is a cyclic quadrilateral. Find the value of a and ...

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  14. A B C D is a cyclic quadrilateral in which: B C is para l l e l t o ...

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  15. Prove that the perpendicular bisectors of the sides of a cyclic qua...

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  16. Prove that the centre of the circle circumscribing the cyclic recta...

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  17. Prove that the circle drawn with any side of a rhombus as a diameter, ...

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  18. If the two sides of a pair of opposite sides of a cyclic quadrilate...

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  19. A B C D is a cyclic quadrilateral in which B A\ a n d\ C D when pr...

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  20. Prove that the angle in a segment greater than a semi-circle is les...

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