Remember, the Angle between two planes is the same thing as the Angle between the normal vectors.

记住两个平面之间的夹角和，两个法向量之间的夹角是一样的。

youdao

Remember, the Angle between two planes is the same thing as the Angle between the normal vectors.

记住两个平面之间的夹角和，两个法向量之间的夹角是一样的。

youdao