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In a quadrilateral A B C D ,A O andB O a...

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. The opposite angles of a parallelogram are equal.

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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. The angle of quadrilateral are respectively 100^0,98^0,92^0dot Find th...

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

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  6. A diagonal of parallelogram divides it into two congruent triangles.

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

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  8. In a quadrilateral A B C D ,\ C O\ a n d\ D O are the bisectors of /C\...

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  9. Let A B C be an isosceles triangle with A B=A C and let D ,\ E ,\ F ...

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  10. ABC is a triangle right angled at C. A line through the mid-point M ...

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  11. The line drawn through the mid-point of one side of a triangle, par...

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  12. In Figure, D ,E and F are, respectively the mid-points of sides B C ,C...

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  13. In DeltaA B C , D, E and F are respectively the mid-points of sides...

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  14. l, m and n are three parallel lines intersected by transversals p an...

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  15. A B C D is a square E ,\ F ,\ G\ a n d\ H are points on A B ,\ B C ,\ ...

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  16. A B C D is a rhombus, E A B F is a straight line such that E A=A B=B F...

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  17. A B C D is a parallelogram. A D is a produced to E so that D E=D C and...

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  18. The line segment joining the mid-points of any two sides of a triangle...

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  19. In a quadrilateral ABCD, CO and DO are the bisectors of /C and /D ...

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

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