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In a quadrilateral `A B C D ,A O` and`B O` are the bisectors of `A/_` and `/_B` respectively. Prove that `/_A O B=1/2(/_C+/_D)dot`

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In quadrilateral A B C D ,\ A O\ a n d\ B O are the bisectors of /_A\ a n d\ /_B respectively. Prove that /_A O B=1/2(/_C+/_D)dot

In a quadrilateral A B C D ,C O and D O are the bisectors of /_C and /_D respectively. Prove that /_C O D=1/2(/_A+/_B)dot

In a quadrilateral A B C D ,\ C O\ a n d\ D O are the bisectors of /_C\ a n d\ /_D respectively. Prove that /_C O D=1/2(/_A+/_B)dot

In a quadrilateral A B C D ,\ C O\ a n d\ D O are the bisectors of /_C\ a n d\ /_D respectively. Prove that /_C O D=1/2(/_A+/_B)dot

In a quadrilateral ABCD , CO and DO are the bisectors of /_C and /_D respectively. Prove that /_C O D=1/2(/_A+/_B)

In Figure, bisectors of /_B\ a n d\ /_D of quadrilateral A B C D meet C D\ a n d\ A B produced at P\ a n d\ Q respectively. Prove that /_P+/_Q=1/2(/_A B C+/_A D C)dot

In a parallelogram A B C D , the bisectors of /_A\ a n d\ /_B meet at Odot Find /_A O Bdot

In a quadrilateral A B C D , bisectors of angles A\ a n d\ B intersect at O such that /_A O B=75^0, then write the value of /_C+\ /_D

In a triangle A B C ,\ /_A B C=\ /_A C B and the bisectors of /_A B C\ a n d\ /_A C B intersect at O such that /_B O C=120^0dot Show that /_A=/_B=/_C=60^0 .

In a triangle A B C ,/_A B C=/_A C B and the bisectors of /_A B C and /_A C B intersect at O such that /_B O C=120^0dot Show that /_A=/_B=/_C=60^0

RD SHARMA ENGLISH-QUADRILATERALS-All Questions
  1. In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in t...

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  2. The sides B A and D C of a quadrilateral A B C D are produced as shown...

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  3. In a quadrilateral A B C D ,A O andB O are the bisectors of A/ and /B ...

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  4. In Figure, bisectors of /B and /D of quadrilateral A B C D meet C D an...

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  5. The angle of a quadrilateral are respectively 100^0,\ 98^0,\ 92^0dot F...

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  6. In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in t...

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  7. In a quadrilateral A B C D ,C O and D O are the bisectors of /C and /D...

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  8. The angles of a quadrilateral are in the ratio 3:5:9: 13. Find all t...

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  9. In a parallelogram A B C D , prove that sum of any two consecutive ang...

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  10. In a parallelogram A B C D ,/D=115^0, determine the measure of /A and ...

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  11. In Figure, A B C D is a parallelogram. Compute the values of x\ a n...

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  12. In Figure, find the four angles A ,\ B ,\ C\ a n d\ D in the parall...

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  13. In a parallelogram A B C D diagonals A C\ a n d\ B D intersect at O\ a...

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  14. A B C D is a parallelogram and line segments A X ,\ C Y bisect the ...

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  15. Given /\A B C , lines are drawn through A ,\ B\ a n d\ C parallel r...

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  16. In Figure, A N and C P are perpendicular to the diagonal B D of a para...

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  17. In Figure, P Q R S is a parallelogram, P O\ a n d\ Q O are, respective...

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  18. The diagonals of a parallelogram A B C D intersect at O. A line thro...

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  19. In Figure, A B C D is a parallelogram and /D A B=60^@. If the bisector...

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  20. In a parallelogram A B C D , the bisector of /A also bisects B C at X....

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