Answers for "i want to create a triangle from 2 3d vectors"
http://answers.unity.com/questions/1628415/i-want-to-create-a-triangle-from-2-3d-vectors.html
The latest answers for the question "i want to create a triangle from 2 3d vectors"Answer by myzzie
http://answers.unity.com/answers/1628467/view.html
There is no last vector, what you're looking for is a circle. Then you can define where in that circle you want to put your last point.
Vector3 dir = (B-A).normalized;
float dist = Vector3.Distance(A, B);
Vector3 perp = Vector3.Cross(dir, Vector3.up).normalized;
C = Quaternion.AngleAxis(60, perp) * dir * dist;Sat, 04 May 2019 15:18:22 GMTmyzzie