HELP!!!
A and B are end points of a diameter of a circle. Point C is in the center of the circle. I need to find the diameter and the coordinates of C. A(-9,12), B(17,21)
I have to help my daugter and I don't know how to figure this out can someone show me?

Question

HELP!!!
 A and B are end points of a diameter of a circle. Point C is in the center of the circle. I need to find the diameter and the coordinates of C. A(-9,12), B(17,21)  
I have to help my daugter and I don't know how to figure this out can someone show me?

anonymous · Answer

you have to find halfway between -9 and 17 then halfway between 12 and 21 setting up a number line usually helps or what you could do is figure out the distance between the two point and divide by two distance formula is how you figure it out google that formula and just plug in the numbers/coordinates that should help