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\ 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 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

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

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

In quadrilateral ABCD,AO and BO are the bisectors of /_A and /_B respectively.Prove that /_AOB=(1)/(2)(/_C+/_D)

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

In a quadrilateral ABCD,CO and DO are the bisectors of /_C and /_D respectively. Prove that /_COD=(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