张角定理
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本文利用单形的体积公式,得到了n维欧氏空间En中的张角定理,由此又证得了单形中的一组恒等式,利用这组恒等式给出了Safta猜想在En空间中的加强形式。
In this paper , we use the volume formula of simplex , obtain the spread angle theorem in the n-dimensional Euclideam space En , thus proving some identities for a simplex and obtaining a sharpening form of Safta 's conjecture in En .
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E~n空间中张角定理及其应用
Spread Angle Theorem in E ~ n and Its Application