nine-point circle的用法和样例：
例句
- Prominent in the modern elementary geometry of the triangle is the nine-point circle.
九点圆在三角形的现代初等几何中是重要的。
nine-point circle的相关资料：
临近单词
ninepin
nine
nine thousand three hundred and seventy four
nine thousand three hundred and thirty eight
nine thousand seven hundred and seventy four
nine thousand five hundred and seventy eight
nine thousand three hundred and twenty eight
nine thousand eight hundred and seventy four
nine thousand eight hundred and ninety three
nine thousand eight hundred and twenty three
nine thousand seven hundred and thirty three
nine thousand three hundred and seventy nine
