3 points on a circle

[TerryKoen]

I have two cylinders tha each have 3 known points. With three points i have to find the center point of one circle then with the other three points I need to find the other center point. When the center points are established I need tofind the midpoint of the line between the two center points. Can someone help me get started? Thanks

[ValeryOchkov]

One solution (symbol math of Mathcad):

[TerryKoen]

Thanks Dr. Ochkov. This solution is very elegant I will have to study. Where did the 25mm dimension come from? Is it the midpoint of the radius?

[Fred_Kohlhepp]

Little bit of vector math.

[TerryKoen]

Here is a solution I worked out. These equations find the center of a circle given 3 points It is not very elegant though. It only finds the center of the first circle.

[TerryKoen · Accepted solution]

Here is the solution I worked out.