Elements of Quaternions

addition Algebra applicable arcs axes axis becomes called chord circle coincide common complanar condition conjugate curve definition denoting diagonals diameter differ Differential direction distance drawn equal equation example expression extremities factor follows formula function geometric given Hence intersection latter length limit locus mean point middle point multiplication notation obtain operation opposite origin parallel parallelogram perpendicular plane positive quadrilateral quaternion quotient ratio reciprocal regarded relation represented respectively result reversal right angles right line rotation Saß scalar sides sphere squares straight line Substituting subtracting symbol taking tangent tensors tion triangle true turns unit vector Vaß versor whence write written