<< And i also need it to be oriented to normal in that position.
My method Line-Line works with any Point clicked on the surface of the sphere!
So of course of any curves drawn on this sphere (cutting it in half or any other! :)
Here the curve divides not the Sphere in half, but that will be the same if it's cutting half! ;)
First is clicked on a curve, other anywhere on the sphere!

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