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3 points on a circle

TerryKoen
1-Newbie

3 points on a circle

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

1 ACCEPTED SOLUTION

Accepted Solutions

Here is the solution I worked out.

View solution in original post

5 REPLIES 5

One solution (symbol math of Mathcad):

RxRyR.png

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?

Little bit of vector math.

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.

9-22-2012 5-46-35 PM.jpg

Here is the solution I worked out.

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