Prove that quadrilateral `A B C D` , where `A B-=x+y-10 ,B C-=x-7y+50=0,C D-=22 x-4y+125=0,a n dD A-=2x-4y-5=0,` is concyclic. Also find the equation of the circumcircle of `A B C Ddot`

Prove that quadrilateral A B C D , where A B-=x+y-10 ,B C-=x-7y+50=0,C D-=22 x-4y+125=0, a n d D A =2x-4y-5=0, is concyclic. Also find the equation of the circumcircle of A B C Ddot

Prove that quadrilateral A B C D , where A B=x+y-10 ,B C=x-7y+50=0,C D=22 x-4y+125=0, and DA =2x-4y-5=0, is concyclic. Also find the equation of the circumcircle of A B C Ddot

Prove that quadrilateral ABCD, where AB-=x+y-10,BC-=x-7y+50=0,CD-=22x-4y+125=0, and DA-=2x-4y-5=0 is concyclic.Also find the equation of the circumcircle of ABCD.

In a cyclic quadrilateral A B C D , /_A=(2x+4)o,\ \ /_B=(y+3)o,\ \ /_C=(2y+10)o,\ \ /_D=(4x-5)o . Find the four angles.

In triangle A B C , the equation of side B C is x-y=0. The circumcenter and orthocentre of triangle are (2, 3) and (5, 8), respectively. The equation of the circumcirle of the triangle is a) x^2+y^2-4x+6y-27=0 b) x^2+y^2-4x-6y-27=0 c) x^2+y^2+4x-6y-27=0 d) x^2+y^2+4x+6y-27=0

In triangle A B C , the equation of side B C is x-y=0. The circumcenter and orthocentre of triangle are (2, 3) and (5, 8), respectively. The equation of the circumcirle of the triangle is a) x^2+y^2-4x+6y-27=0 b) x^2+y^2-4x-6y-27=0 c) x^2+y^2+4x-6y-27=0 d) x^2+y^2+4x+6y-27=0

In a cyclic quadrilateral A B C D , /_A=(2x+4)^o,\ /_B=(y+3)^o,\ /_C=(2y+10)^o,\ \ /_D=(4x-5)^o Find the four angles.

In Fig.85, A B C D\ a n d\ A C B Ddot Find the value of x , y , zdot

In a triangle A B C , if A is (2,-1),a n d7x-10 y+1=0 and 3x-2y+5=0 are the equations of an altitude and an angle bisector, respectively, drawn from B , then the equation of B C is (a) a+y+1=0 (b) 5x+y+17=0 (c) 4x+9y+30=0 (d) x-5y-7=0

In a triangle A B C , if A is (2,-1),a n d7x-10 y+1=0 and 3x-2y+5=0 are the equations of an altitude and an angle bisector, respectively, drawn from B , then the equation of B C is (a) a+y+1=0 (b) 5x+y+17=0 (c) 4x+9y+30=0 (d) x-5y-7=0