Posted by **arya** on Monday, April 20, 2009 at 7:19pm.

Line AB is the diameter of circle C. If the endpoints of the diameter are A(3, -4) and B(-2, 5), what are the coordinates of the center of the circle C?

I've forgotten how to do this, heh heh... help please?

- math -
**drwls**, Monday, April 20, 2009 at 7:40pm
The x and the y values of the midpoint (center) are the averages of the x and y values of A and B. The average x value of A and B is 1/2. The average y value is ___ .

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**arya**, Monday, April 20, 2009 at 7:43pm
Isn't there some distance formula...?

- math -
**drwls**, Monday, April 20, 2009 at 8:03pm
Yes. I just described it.

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