Perpendicular to edge at point

When I do this I am building a sketch from the end of a line with the intent of the end point being the center of my new sketch. But I have a hard time finding the end point on the new construction plane. Any seguestions.

If you select a line then choose add plane it puts it center in the new plane automagically

Yes initially when creating the plane but when you make that plane your active plane there is no point. So you are forced to go to perspective view draw a line off the end of the line you used to create the plane and project that line to the plane to get the point. I want to know why we cannot project points to a plane and why the point does not show up when you make that plane the active plane. The point is usually what we need to make sketches on that plane.