1.find the circumcentre of the triangle with vertices (-3,0),(7,0),(9,-6).show that the point (1,2) lies on the circumcircle.
2.L(-1,0),M(3,7),N(5,-2) are the midpoints of the sides BC,CA,AB respectively of triangle ABC.find the equation of AB.
3.ABC is a rhombus .A is point(2,-1),and C is the point (4,7).find the equation of the diagonal BD
4.The straight line x-y-6=0 cuts the curve y²=8x at P and Q.Calculate the length of PQ.
2.L(-1,0),M(3,7),N(5,-2) are the midpoints of the sides BC,CA,AB respectively of triangle ABC.find the equation of AB.
3.ABC is a rhombus .A is point(2,-1),and C is the point (4,7).find the equation of the diagonal BD
4.The straight line x-y-6=0 cuts the curve y²=8x at P and Q.Calculate the length of PQ.