Greetings,

I’m having problems understand and figuring out how to place a dimension on an angle parallel to two points. I understand this has to do with Vector3d, but I’m not clear how to achieve it and I haven’t been able to find a solution yet.

I am attempting to draw a plan view of a circle and measure parts of it. Point A and Point B are two points on that circle. AB represents a chord section of said circle. The radius and arc length are variable. The location of A and B are both known, and are used as the start and end point of the desired dimension. What I can’t figure out is how to correctly combine the vectors to measure AB.

Thanks.