Find the standard equation of the sphere with the given characteristics. Endpoints of a diameter: (2, 1, 3), (1, 7, −1)

The hypotenuse of a 45 -45 -90 triangle measure 7 square root 2 units

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.