orthotomic circle

例句：

1. 1.The circle is orthogonal to the line, so it is not perpendicular.
   这个圆与这条线是正交的，所以它不是垂直的。
2. 2.The orthogonal projection of a point on a plane is its distance from the origin.
   一个点在平面上的正交投影是它到原点的距离。
3. 3.The orthogonal relationship between two vectors is determined by their dot product and magnitudes.
   两个向量之间的正交关系由它们的点积和模长决定。