查询词典 nine point circle

Firstly , the following proofs are made by means of homothet-ic transformation : 1 the centre of a nine-point circle is at the midpoint of ligature of its curcumcentre andorthocentre; 2 the radius of nine-point circle is equal to half of the radius of its curcumcircle.

本文给出一个简单的证法，先用位似变换的方法证明九点圆的圆心在外心和垂心连线段的中点，九点圆的半径等于外接圆半径的一半。

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。

Prom nt 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。

The peony duplicate leaf has stretches out straight in front of oneself, slanting extends the different shape, after the general stem is long four handles stems, only then can have the bud appearance, each handle stem leaf has three groups of three leaf blades productions, constitutes three forks nine peonies to have stands erect, half development, develops three kind of shapes, the flower bud has the circle, oblately, the point round, long sharp circle Zhu Xing?

牡丹复叶有平伸、斜伸不同形态，一般枝梗长出四柄梗后，才会有蓓蕾出现，每柄梗叶有三组三顶叶片生成，构成三叉九顶。牡丹有直立、半开展、开展三种株形，花蕾有圆、扁圆、尖圆、长尖圆诸形。

Then thetheorem can be proved by calculating the distances of centres between a nine-point circle and...

然后通过计算九点圆与内切圆、九点圆与旁切圆的圆心距，使定理获得证明。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。